KnowledgeInSight
Phenomenology for Consciousness Studies
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Module 2 · Lesson 2

Body-Subject: Phantom Limbs and the Schneider Case

This lesson analyzes two cases Merleau-Ponty uses to show that neither physiology nor psychology alone can explain the lived body: the phantom limb and the patient Schneider. You'll be able to explain the habitual body and the body at this moment, the difference between grasping and pointing, and the "intentional arc," and assess how strong the evidence is. Clinical cases like these remain central in debates over embodiment in philosophy and neuroscience.

What you will be able to do

  • Analyze the phantom limb and the Schneider case as evidence against mechanistic and intellectualist accounts of the body

0% of this lesson · 9 items · 1h 3m total · 48m without the optional journal

Contents of this lesson9 items
  1. ReadingPhantom Limbs, Mirror Therapy, and the Limits of Physical and Mental Explanation3 min
  2. ReadingPhantom Limbs, Anosognosia, and the Failure of Physiological and Psychological Accounts4 min
  3. ReadingThe Habitual Body and the Body at This Moment4 min
  4. ReadingGrasping and Pointing: Merleau-Ponty's Reading of the Schneider Case4 min
  5. ReadingThe Intentional Arc and the Reliability of the Schneider Case4 min
  6. Guided ReadingGuided Close Reading: The Intentional Arc in Phenomenology of Perception7 min
  7. Guided ConversationGrasping vs. Pointing12 min
  8. Journal · optionalJournal Entry on Clinical Cases15 min
  9. Knowledge CheckPhantom Limbs and the Schneider Case10 min

Reading 3 min

Phantom Limbs, Mirror Therapy, and the Limits of Physical and Mental Explanation

Most people who lose a limb continue to feel it. The missing hand may seem to clench, itch, or ache. The missing leg may seem to be there when the person gets out of bed. These experiences, known as phantom limbs, are common, often long-lasting, and sometimes painful. They're neither imagined in the ordinary sense nor simply mistaken. For the person who has them, the phantom is felt as part of the body.

Phantom limbs have long been a test case for theories of mind and body. They seem to invite two explanations. One is physiological: the severed nerves, or the brain regions that once served the limb, keep producing signals, and the phantom is their effect. The other is psychological: the phantom is a memory, or a refusal to accept the loss. Each explanation captures something. Neither seems to capture it all.

Research in the 1990s gave the question a new form. V. S. Ramachandran and Diane Rogers-Ramachandran used a simple device: a box with a vertical mirror down the middle (Ramachandran and Rogers-Ramachandran 1996). A patient places the intact arm on one side, and the mirror reflection appears where the missing arm would be. When the patient moves the intact arm while watching the reflection, some feel the phantom move too. Some report that a painfully clenched phantom hand relaxes. The effect showed that what a person sees of the body can change what's felt in a limb that no longer exists. It prompted decades of work on mirror therapy, with mixed results in controlled trials.

The case is puzzling because it sits between the categories we usually use. A purely physiological explanation must say why seeing a reflection changes a phantom. A purely psychological one must say why the phantom has a definite posture, location, and felt movement that follow the body's own logic.

Maurice Merleau-Ponty took the phantom limb, and another famous case, the patient Schneider, as evidence that the lived body is neither a physiological mechanism nor a set of ideas (Merleau-Ponty [1945] 2012, pt. 1, chs. 1 and 3). Clinical cases matter to theories of embodiment because they show what happens when ordinary bodily life breaks down. They can test a theory in ways that everyday cases can't. They also carry risks: a single case, reported by interested observers, may not bear the weight placed on it. Learning to use clinical evidence well means doing both at once.

References

  • Merleau-Ponty, Maurice. (1945) 2012. Phenomenology of Perception. Translated by Donald A. Landes. London: Routledge.
  • Ramachandran, V. S., and D. Rogers-Ramachandran. 1996. "Synaesthesia in Phantom Limbs Induced with Mirrors." Proceedings of the Royal Society of London. Series B: Biological Sciences 263 (1369): 377–86.

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Reading 4 min

Phantom Limbs, Anosognosia, and the Failure of Physiological and Psychological Accounts

Introduction

Merleau-Ponty's first argument about the lived body turns on two clinical phenomena that seem opposite: feeling a limb that isn't there, and ignoring a limb that is. He argues that neither physiology nor psychology can explain them alone, or even together.

This reading explains the two cases and why each kind of explanation fails. Citations to Phenomenology of Perception give the part and chapter. Landes's translation prints the French page numbers, so learners using Colin Smith's translation can follow along (Merleau-Ponty [1945] 2002).

Two Paired Cases

Merleau-Ponty pairs the phantom limb with anosognosia (Merleau-Ponty [1945] 2012, pt. 1, ch. 1).

  • A phantom limb is the continued felt presence of a limb after its amputation, including its position, movements, and sensations such as pain.
  • Anosognosia, in the sense Merleau-Ponty discusses, is the failure or refusal to acknowledge a paralyzed or impaired limb as one's own, or to acknowledge its impairment.

One patient keeps a limb that's gone. The other disowns a limb that's still there. Both show that the body a person lives doesn't simply match the body as an object.

Why Physiology Fails

A physiological explanation is an account of a bodily experience in terms of nerve signals and brain processes in the body as object. For the phantom, it says the phantom is produced by signals from the severed nerves or the brain regions that served the limb. There's evidence for it. Merleau-Ponty notes that in some reports, cutting the relevant nerve pathways to the brain made the phantom disappear.

But other facts don't fit. A phantom can appear, or return, when the person is reminded of the circumstances of the injury, or experiences a strong emotion. Merely physical signals shouldn't respond to memories and meanings. The phantom depends on the person's history and situation, not only on nerves.

Why Psychology Fails

A psychological explanation is an account of a bodily experience in terms of memories, beliefs, or emotions in a consciousness. For the phantom, it says the phantom is a memory, a belief, or a refusal to accept the loss. That fits the influence of emotion and memory. But it faces the opposite problem. If the phantom were a memory or a belief, why would cutting nerve pathways abolish it? And why would it have a precise felt posture, like a real limb, rather than the vagueness of a memory?

Why a Mixed Theory Fails Too

The obvious move is to combine the two: the phantom has physiological and psychological causes, working together. Merleau-Ponty argues that this doesn't solve anything. Physiological processes are events in the body as object, measurable and third-personal. Psychological facts are events in a consciousness, first-personal and meaningful. A mixed theory must explain how the two kinds of fact connect, and it has no common ground on which to connect them.

The failure points to something neither account describes: a level of bodily life that's neither mechanical nor mental. The phantom makes sense only at the level of the person's relation to the world, which Merleau-Ponty, borrowing Heidegger's term, calls being-in-the-world (Heidegger [1927] 2008, §12). The phantom isn't a signal or a thought. It's a way of still being oriented toward a world that calls for two hands.

Conclusion

The phantom limb and anosognosia are paired cases in which the lived body diverges from the body as object. Physiology can't explain why the phantom responds to memory and emotion. Psychology can't explain why it depends on nerve pathways and has a precise felt posture. A mixed theory can't join the two. The phenomena make sense at the level of being-in-the-world.

Key Terms

  • Phantom limb: The continued felt presence of a limb after its amputation, including its position, movements, and sensations such as pain.
  • Anosognosia: In the sense Merleau-Ponty discusses, the failure or refusal to acknowledge a paralyzed or impaired limb as one's own, or to acknowledge its impairment.
  • Physiological explanation: An account of a bodily experience in terms of nerve signals and brain processes in the body as object.
  • Psychological explanation: An account of a bodily experience in terms of memories, beliefs, or emotions in a consciousness.

References

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Reading 4 min

The Habitual Body and the Body at This Moment

Introduction

If the phantom limb is neither a signal nor a thought, what is it? Merleau-Ponty's answer distinguishes two layers of the lived body, and it treats the phantom as a way of remaining open to a world that still calls for the missing limb.

This reading explains the habitual body and the body at this moment, and how they account for the phantom. Citations to Phenomenology of Perception give the part and chapter.

Two Layers of the Body

Merleau-Ponty distinguishes two layers in one's own body (Merleau-Ponty [1945] 2012, pt. 1, ch. 1).

  • The habitual body (corps habituel) is the layer of settled capacities and ways of acting built up over a lifetime, which projects a field of practical possibilities onto the world.
  • The body at this moment (corps actuel) is the body as it currently is, with its present capacities and limitations.

Usually, the two coincide. The world offers me possibilities that my habitual body is ready for, and my present body can take them up. The phantom limb is a case where they come apart.

Habitual bodyBody at this moment
What it isSettled capacities built up over timeThe body's present state
What it opensA field of practical possibilitiesWhat can actually be done now
After an amputationStill ready to grasp with two handsHas one hand
What resultsObjects still appear as graspable by the missing handThey can't be grasped that way

The Phantom as an Open Field

Merleau-Ponty's account of the phantom follows. The world still shows up to the person as a world for two hands. Doors, tools, and railings still solicit the missing limb. The habitual body keeps that field of possibilities open, even though the body at this moment can't use them. The phantom is the lived form of that openness. It's the limb the world still calls for.

The phantom, in Toadvine's summary, keeps open a field of practical possibilities (Toadvine 2023, §3). It isn't a representation of the lost arm. It's the persistence of a way of being in the world.

This also explains why the phantom behaves as it does. It responds to emotion and memory, because it belongs to the person's life and situation. It depends on nerve pathways, because the habitual body is a bodily layer, not a set of ideas. And it has a precise felt posture, because it's a limb ready for action, not a vague image.

Ambivalent Presence

Merleau-Ponty compares the phantom to a repressed memory. The person knows, in a sense, that the limb is gone, and doesn't know it, in another sense. The phantom has an ambivalent presence, in Merleau-Ponty's phrase: it's both acknowledged and not acknowledged, known as lost and still counted on.

This isn't a deliberate refusal. It happens below the level of personal decision. Merleau-Ponty describes this layer as pre-personal: an anonymous layer of bodily existence below deliberate choice, which carries on its own commitments to the world. The phantom persists at that level. It isn't a belief the person could simply revise.

Conclusion

Merleau-Ponty distinguishes the habitual body, which projects a field of practical possibilities, from the body at this moment. In the phantom limb, the habitual body keeps open a world that calls for the missing limb. The phantom has an ambivalent presence and persists at a pre-personal level. That's why it responds to both nerves and meanings.

Key Terms

  • Habitual body (corps habituel): In Merleau-Ponty, the layer of settled capacities and ways of acting built up over a lifetime, which projects a field of practical possibilities onto the world.
  • Body at this moment (corps actuel): In Merleau-Ponty, the body as it currently is, with its present capacities and limitations.
  • Ambivalent presence: Merleau-Ponty's phrase for the phantom limb's status as both acknowledged and not acknowledged, known as lost and still counted on.
  • Pre-personal: In Merleau-Ponty, describing an anonymous layer of bodily existence below deliberate choice, which carries on its own commitments to the world.

References

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Reading 4 min

Grasping and Pointing: Merleau-Ponty's Reading of the Schneider Case

Introduction

The Schneider case is the most discussed clinical example in Phenomenology of Perception. A patient who could scratch his nose but not point to it became, in Merleau-Ponty's hands, evidence about the structure of all human movement.

This reading summarizes the case, explains the distinctions between grasping and pointing and between concrete and abstract movement, and sets out why Merleau-Ponty rejects both the empiricist and intellectualist readings. Citations to Phenomenology of Perception give the part and chapter.

The Case

Schneider was a soldier wounded in the First World War by a shell splinter to the back of the head. The psychologist Adhémar Gelb and the neurologist Kurt Goldstein studied him for years (Goldstein [1934] 1995). Merleau-Ponty took his account of the case from their reports (Merleau-Ponty [1945] 2012, pt. 1, ch. 3).

The central observation concerned two kinds of movement.

  • Grasping (Greifen) is a movement that takes hold of or acts on something within a practical situation, such as scratching an itch or taking a handkerchief from a pocket.
  • Pointing (Zeigen) is a movement that indicates or designates something without acting on it, such as pointing to one's nose when asked.

Schneider could grasp but, reportedly, not point. He could scratch his nose at once when it itched, yet not point to it on command without preparatory movements.

Concrete and Abstract Movement

Merleau-Ponty generalizes the distinction.

  • A concrete movement is a movement performed within an actual practical situation, answering to a real demand, such as swatting a mosquito.
  • An abstract movement is a movement performed outside any practical situation, on command or for its own sake, which requires the body to set up a virtual situation for itself, such as moving an arm when asked, with no reason to move it.

Schneider could perform concrete movements. Abstract ones required laborious workarounds, if he could do them at all.

Two Readings Rejected

Merleau-Ponty considers two ways of explaining the pattern, and rejects both.

Empiricist readingIntellectualist readingMerleau-Ponty's reading
What's lostA specific function, such as visual representations of the bodyA symbolic or representational function of thoughtThe power to project a situation around the body
Why abstract movement failsThe needed visual data are missingHe can't represent the movement to himselfHe can't set up a virtual situation
What it can't explainWhy concrete movements work without those dataWhy the deficit shows in movement, not only in thinking(His own view is that the capacity is bodily, not purely mental)

The empiricist reading treats the deficit as the loss of a local part, such as visual images. But Schneider's concrete movements didn't depend on those images, so their loss doesn't explain the pattern. The intellectualist reading treats it as the loss of a capacity of thought, the ability to represent. But then the deficit should be purely cognitive, and it isn't. It shows up in how he moves.

Merleau-Ponty's alternative is that what's damaged is neither a local function nor pure thought. It's a bodily power to project possibilities, to act on the merely possible as well as the actual. He calls the structure that normally supports this power the intentional arc.

Conclusion

Schneider could grasp but not point: he could perform concrete movements within practical situations, but not abstract ones on command. Merleau-Ponty rejects the empiricist reading, a lost local function, and the intellectualist reading, a lost symbolic function. On his reading, a bodily power to project possible situations has been damaged.

Key Terms

  • Grasping (Greifen): A movement that takes hold of or acts on something within a practical situation.
  • Pointing (Zeigen): A movement that indicates or designates something without acting on it.
  • Concrete movement: In Merleau-Ponty, a movement performed within an actual practical situation, answering to a real demand.
  • Abstract movement: In Merleau-Ponty, a movement performed outside any practical situation, on command or for its own sake, which requires the body to set up a virtual situation for itself.

References

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Reading 4 min

The Intentional Arc and the Reliability of the Schneider Case

Introduction

Merleau-Ponty's most ambitious concept in Part One, the intentional arc, is introduced to explain a single patient. That makes it important to ask two questions: what the concept means, and how much it depends on the case.

This reading explains the intentional arc, summarizes later doubts about the Schneider reports, and considers what those doubts mean for Merleau-Ponty's argument. It ends with a table of core terms. Citations to Phenomenology of Perception give the part and chapter.

The Intentional Arc

Merleau-Ponty proposes that the life of consciousness, whether perceiving, desiring, or moving, is underpinned by an intentional arc: the pre-reflective projection, around us, of our past, our future, our human setting, and our physical, ideological, and moral situation, which unifies perception, action, and understanding (Merleau-Ponty [1945] 2012, pt. 1, ch. 3).

The image is of an arc thrown out around us, like a bridge or a bow's curve, linking us to a world of meaningful possibilities. It's what makes the world show up as a place to act, with things to grasp, paths to take, and tasks to finish. It unifies the senses with one another, and with intelligence and movement.

In Schneider, Merleau-Ponty says, this arc goes slack. The world no longer projects possibilities around him beyond what's immediately present. He can respond to the actual, like the itch or the mosquito, but not set up the merely possible. That's why abstract movement fails. The lesson's close reading works through this passage.

Doubts About the Case

Merleau-Ponty took the Schneider case from Gelb and Goldstein's reports without examining the patient himself (Goldstein [1934] 1995). Later scholarship has questioned those reports (Marotta and Behrmann 2004). Critics raised concerns that Schneider's performance may have been shaped by years of repeated testing, and that later examinations didn't confirm the original pattern. Jonathan Marotta and Marlene Behrmann reviewed the case and the criticisms. How well the original observations hold up remains debated.

What This Means for the Argument

If the case is unreliable, does Merleau-Ponty's argument fall? Three considerations bear on the question.

  1. The argument's pattern doesn't depend on one patient. Its structure is to show that both a mechanistic and an intellectualist explanation fail, and that a third level, bodily and meaningful, is needed. The phantom limb supports the same pattern.
  2. Everyday experience supports it too. The difference between scratching an itch and pointing to the same spot on command can be noticed by anyone, with no clinical case at all.
  3. The case still matters. The intentional arc was introduced to explain Schneider's specific pattern. If that pattern is doubtful, the concept needs other support. That support may exist, but the case alone can't supply it.

Scholars disagree about how much weight the case should bear. A careful reader treats it as suggestive evidence, not settled neuroscience.

Core Concepts at a Glance

TermWhat it is
Phantom limbThe continued felt presence of a limb after its amputation, including its position, movements, and sensations such as pain.
AnosognosiaIn the sense Merleau-Ponty discusses, the failure or refusal to acknowledge a paralyzed or impaired limb as one's own, or to acknowledge its impairment.
Habitual body (corps habituel)In Merleau-Ponty, the layer of settled capacities and ways of acting built up over a lifetime, which projects a field of practical possibilities onto the world.
Body at this moment (corps actuel)In Merleau-Ponty, the body as it currently is, with its present capacities and limitations.
Concrete movementIn Merleau-Ponty, a movement performed within an actual practical situation, answering to a real demand.
Abstract movementIn Merleau-Ponty, a movement performed outside any practical situation, on command or for its own sake, which requires the body to set up a virtual situation for itself.

Conclusion

The intentional arc projects our past, future, and situation around us, unifying perception, movement, and understanding. In Schneider, Merleau-Ponty says, it goes slack. The case's reliability has been questioned. The argument's general pattern can draw on other cases and on everyday experience, but the intentional arc was built for this case and needs other support if the case fails.

Key Terms

  • Intentional arc: In Merleau-Ponty, the pre-reflective projection, around us, of our past, our future, our human setting, and our physical, ideological, and moral situation, which unifies perception, action, and understanding.
  • Phantom limb: The continued felt presence of a limb after its amputation, including its position, movements, and sensations such as pain.
  • Anosognosia: In the sense Merleau-Ponty discusses, the failure or refusal to acknowledge a paralyzed or impaired limb as one's own, or to acknowledge its impairment.
  • Habitual body (corps habituel): In Merleau-Ponty, the layer of settled capacities and ways of acting built up over a lifetime, which projects a field of practical possibilities onto the world.
  • Body at this moment (corps actuel): In Merleau-Ponty, the body as it currently is, with its present capacities and limitations.
  • Concrete movement: In Merleau-Ponty, a movement performed within an actual practical situation, answering to a real demand.
  • Abstract movement: In Merleau-Ponty, a movement performed outside any practical situation, on command or for its own sake, which requires the body to set up a virtual situation for itself.

References

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Guided Reading 7 min

Guided Close Reading: The Intentional Arc in Phenomenology of Perception

Introduction

The intentional arc appears in a single dense sentence in Part One, chapter 3, and in the few pages of argument around it. It's among the most quoted concepts in Merleau-Ponty's work, and among the most loosely used. This reading works through the passage move by move. It ends with a model paraphrase and a link back to the Schneider evidence on which the concept was built, and to that evidence's disputed status.

Locating the Passage

The passage comes near the end of Merleau-Ponty's long analysis of Schneider in Part One, chapter 3 (Merleau-Ponty [1945] 2012, pt. 1, ch. 3). Landes's translation prints the French page numbers in the margin, so learners using Colin Smith's translation can follow along (Merleau-Ponty [1945] 2002). Key phrases below are given in French, with typical English renderings under Key Considerations.

No free English translation is available. The free Stanford Encyclopedia of Philosophy entry on Merleau-Ponty covers the body-subject and summarizes the Schneider analysis (Toadvine 2023, §3).

Before you start, note the setting. Merleau-Ponty has shown, to his satisfaction, that neither an empiricist nor an intellectualist reading explains Schneider. He now needs a positive account of what's disturbed.

Walking Through the Argument

Step 1: The life of consciousness is underpinned by an intentional arc

Merleau-Ponty's positive claim is that all conscious life, whether cognitive, perceptual, or desiring, is subtended, or underpinned, by an arc intentionnel. This arc projects around us our past, our future, our human setting, and our physical, ideological, and moral situation. It situates us within all of these.

Notice the scope of the list. The arc isn't only about movement, or only about perception. It gathers time (past and future), other people (the human setting), and meaning (the ideological and moral situation) into one structure. And it's projected "around us." It's not a representation inside the head. It's the shape of the world as it's opened to us.

Step 2: The arc unifies the senses, intelligence, and motricity

Merleau-Ponty's second claim is that the arc makes for the unity of the senses, of the senses with intelligence, and of sensitivity with motricity. Seeing, understanding, and moving aren't three separate faculties that must be coordinated after the fact. They're aspects of one projection toward a world.

That's why a disturbance of the arc doesn't knock out one faculty while leaving the others intact. It changes how perception, thought, and movement all work, together. In Schneider, Merleau-Ponty notes, the disturbance shows up in his movement, his perception of shapes, his understanding of analogies, and even his sexual and emotional life.

Step 3: Illness "slackens" the arc

The third claim is about what happens in illness. In Schneider, the arc goes slack (se détend), or loses its tension. The image is of a bow or a cable that no longer holds its curve. The world still appears, but it no longer projects possibilities beyond the immediate. Things are there, but they no longer point beyond themselves toward what could be done with them. Schneider can respond to the itch, which is actually present. He can't set up the merely possible situation that pointing requires.

The arc isn't destroyed. It's weakened. What remains is a narrower world, organized around what's actual and urgent.

Neither a Mental Act nor a Physical Mechanism

Why does Merleau-Ponty need a new concept? Because his analysis has ruled out both familiar options.

  • It isn't a mental act. If the arc were an act of thought, such as a decision or a representation, then Schneider's deficit would be purely cognitive. But it shows up in his movement.
  • It isn't a physical mechanism. If the arc were a neural circuit, its failure would knock out specific functions. But Schneider's deficit is global, and it concerns the relation between his movements and their situations.

The intentional arc belongs to the level Merleau-Ponty has been describing throughout: the body-subject's pre-reflective engagement with a world of meaning. It's lived, not thought, and meaningful, not mechanical.

Key Considerations

Terms and translations.

FrenchTypical EnglishWhat it names
arc intentionnelintentional arcThe projection of past, future, and situation around us
sous-tenduesubtended, underpinnedHow the arc supports conscious life
se détendslackens, goes limpWhat happens to the arc in illness
motricitémotricity, motilityThe body's power of movement
milieu humainhuman setting, human milieuThe social world projected by the arc

A common misreading. The most common misreading treats the intentional arc as an explicit plan or goal representation: a mental model of what I'm trying to do. That gets it backward.

  • The arc is pre-reflective. It's not something I form or consult. It's the way the world is already opened to me.
  • It's projected around us, not stored within. It's the shape of a meaningful world, not a picture of one.
  • It precedes plans. Explicit plans are possible only because the arc has already opened a world of possibilities.

Summary

The passage moves from the intentional arc that underpins conscious life, through its unifying of the senses, intelligence, and movement, to its slackening in illness. Here is a model paraphrase to check your reading against:

Conscious life, for Merleau-Ponty, rests on an intentional arc: a pre-reflective projection, around us, of our past, our future, our human setting, and our situation. The arc unifies seeing, understanding, and moving, so that a disturbance affects all three together. In Schneider, the arc slackens: the world no longer projects possibilities beyond what's actual, which is why he can scratch an itch but not point to it on command. The arc is neither a mental act nor a physical mechanism. It's the body-subject's lived engagement with a world of meaning (Merleau-Ponty [1945] 2012, pt. 1, ch. 3).

Link to the evidence. Merleau-Ponty introduced the intentional arc to explain Schneider's specific pattern, drawn from Gelb and Goldstein's reports (Goldstein [1934] 1995). Later scholarship has questioned those reports (Marotta and Behrmann 2004). If the pattern is doubtful, the concept isn't refuted, but it loses its main clinical support and has to be defended on other grounds.

References

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Guided Conversation 12 min

Grasping vs. Pointing

This conversation asks you to pick up and point to a cup, point to and scratch your elbow, and recall a habit your body kept after circumstances changed. It ends by planning a journal entry on whether Merleau-Ponty's argument depends on the Schneider case.

You'll have this conversation with Claude, using your own Claude account. The link opens a new chat with the prompt already filled in; press send to start. If the chat opens empty, copy the prompt below and paste it in.

Run this conversation in whichever assistant you already use:

Open in ClaudeOpen in ChatGPT
Claude desktop app

To use another LLM, simply copy and paste the prompt into its chat window.

Show the full prompt (it lists misreadings to watch for, so skip it if you would rather come to the conversation fresh) 
Hands-on Activity: Grasping vs. Pointing (about 12 minutes)

Note to the learner: press send to start. Everything below is facilitator guidance for Claude. It lists misreadings to watch for, so skip it if you'd rather come to the conversation fresh.

Claude, please facilitate a reflective dialogue with me. I'm a graduate-level learner studying Merleau-Ponty's use of the phantom limb and the Schneider case. Follow this guidance for the whole conversation.

GOAL
Help me analyze the phantom limb and the Schneider case as evidence against mechanistic and intellectualist accounts of the body by performing concrete and abstract versions of movements, relating them to the habitual body, and assessing the evidence's reliability.

HOW TO RUN THE CONVERSATION
- Ask one question at a time, then wait for my reply. Keep each of your turns under about 120 words.
- Don't lecture. Explain a point only when I need it to continue, then return to my own movements.
- Be patient, curious, and collegial. Discuss clinical cases respectfully and factually. Define terms of art briefly on first use.
- Plain conversation only: no web search, files, or artifacts.
- Aim for about 12 minutes. If I can't think of a habit, suggest a moved kitchen drawer or a changed keyboard layout. If I seem uncertain, shorten the conversation to 5-7 minutes. Always reach topic 4.
- Start now. Open with one or two warm sentences: this is an exploratory conversation, not a test; we'll try a few simple movements, and I can adapt them however suits me. Then begin topic 1.

TOPICS, IN ORDER
1. Grasping and pointing. Ask me to pick up a cup, then point to the cup without touching it, and to describe the difference as I lived it. Help me notice that grasping answers to the cup's practical presence, while pointing designates it from a distance, for no practical purpose. Introduce grasping (Greifen) and pointing (Zeigen).
2. The elbow. Ask me to point to my elbow on command, then scratch an itch on my elbow, and ask whether these feel like the same capacity. Help me distinguish concrete from abstract movement. Introduce Schneider, who reportedly could do the second but not the first. Introduce the intentional arc as the structure that, on Merleau-Ponty's account, supports abstract movement.
3. The habitual body. Ask me to think of a habit my body keeps even when circumstances change, such as reaching for a light switch that has moved, and how that relates to the habitual body. Help me connect the habit to the distinction between the habitual body and the body at this moment. Mention, carefully and without clinical detail, that Merleau-Ponty uses the same distinction to explain phantom limbs.
4. Closing reflection. Ask whether Merleau-Ponty's argument is weakened if the Schneider case is unreliable, and have me note my view for a journal entry. Accept any position with a reason. Point out that the argument's pattern can also rest on other cases and on everyday experience.

POSITIONS TO KEEP ACCURATE
- The phantom limb and anosognosia show the lived body diverging from the body as object.
- Physiological and psychological explanations each fail, and a mixed theory can't join them.
- The habitual body keeps open a field of practical possibilities. In the phantom limb, it diverges from the body at this moment.
- Grasping acts within a practical situation. Pointing designates without acting.
- Concrete movements answer to actual situations. Abstract movements require setting up a virtual situation.
- The intentional arc projects past, future, and situation around us, and slackens in illness.
- The Schneider case's reliability is disputed. The argument's pattern can rest on other evidence.

MISREADINGS TO CORRECT GENTLY
Keep every point tied to my own movements.
- The phantom as "just in the mind." It depends on nerve pathways too, and Merleau-Ponty rejects both purely physical and purely mental accounts.
- The intentional arc as an explicit plan. It's pre-reflective, projected around us, not a representation.
- Schneider's case as settled neuroscience. Its reliability has been questioned.
- Abstract movement as "mental" and concrete as "bodily." Both are bodily, differing in their relation to the situation.
- The habitual body as mere reflex. It projects a meaningful field of possibilities.

LIMITS
- Adapt the movements if I mention any physical limitation.
- If I mention personal experience of limb loss or a related condition, acknowledge it respectfully and let me decide how much to discuss.
- Keep discussion of phantom limbs and other clinical cases careful and factual, without clinical detail.

TO FINISH
After I state my view, close in one short turn:
- Affirm one precise observation I made, in my own words where possible.
- Suggest one or two next steps that fit how the conversation went. Possible steps: write out my evaluation of how far the argument depends on the Schneider case; read Marotta and Behrmann's review of the case; consider what other evidence could support the intentional arc; review how grasping differs from pointing; revisit the intentional arc and its link to the evidence; review the terms habitual body, concrete movement, and abstract movement; retry the scratch-and-point exercise.
- Restate my view on its own line, labeled "Journal note," so I can copy it as the focus for a journal entry.

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Journal 15 minOptional

Journal Entry on Clinical Cases

Overview

You'll write a 300–500 word entry and keep it in your journal. This activity is optional. The entry analyzes Merleau-Ponty's clinical arguments using your own movements and habits, and assesses their evidential basis.

If you've written about bodily experience before, compare that entry with this one.

Writing Prompt

In 300–500 words, contrast a concrete and an abstract movement you performed, describe a case where your habitual body persisted, and evaluate how far Merleau-Ponty's conclusions depend on the reliability of the Schneider case.

Steps

  1. Contrast a concrete and an abstract movement you performed. Choose movements you can perform, and a habit your body kept after something changed. For example, scratch an itch, then point to the same spot on command.
  2. Describe a case of the habitual body persisting. For example, reaching for a light switch that has moved.
  3. Evaluate how much Merleau-Ponty's conclusions depend on the Schneider case. Give a reason for your view.

Self-Check

Before you finish, check that your entry:

  • Contrasts concrete and abstract movement with concrete description
  • Describes a habitual-body case and relates it to the habitual body vs. the body at this moment
  • Evaluates the argument's dependence on the case, with a reason

Nothing is uploaded. Write in your own notebook or document and keep it.

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Knowledge Check 10 min

Phantom Limbs and the Schneider Case

This ungraded knowledge check assesses your understanding of Merleau-Ponty's clinical arguments. You'll be asked about the phantom limb, the habitual body, grasping vs. pointing, the intentional arc, and the evidential status of the Schneider case.

Note: Use this to test yourself, review the feedback on any questions you miss, and retry until you feel confident before moving forward.

5 questions · ungraded · retry as often as you like

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