• Like
Phenomenal Consciousness and the Allocentric-Egocentric Interface
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

Phenomenal Consciousness and the Allocentric-Egocentric Interface

  • 1,701 views
Published

 

Published in Business , Technology
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
1,701
On SlideShare
0
From Embeds
0
Number of Embeds
2

Actions

Shares
Downloads
63
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. Phenomenal Consciousness and the Allocentric-Egocentric Interface Pete Mandik Associate Professor Coordinator, Cognitive Science Laboratory Chairman, Department of Philosophy William Paterson University, New Jersey USA
  • 2. Three Problems of Consciousness
    • What is state consciousness?
      • (What makes a mental state conscious and not unconscious?)
    • What is transitive consciousness?
      • (What are we conscious of ?)
    • What is phenomenal character?
      • (What are qualia? What is “what it is like” ?)
  • 3. The Allocentric-Egocentric Interface Theory of Consciousness
    • Consciousness consists in the interface between allocentric and egocentric coding schemes for perceptible features
    • Conscious states are hybrids of allocentric and egocentric representations and phenomenal character is determined by their contents
  • 4. What is the egocentric allocentric distinction? ALLOCENTRIC EGOCENTRIC Self-specifying contents Non-self-specifying contents Online (sensorimotor) Offline (memory and planning) Analog, isomorphism Conceptual, categorical Info. encapsulation Inferential promiscuity
  • 5. Levels of visual processing
  • 6. What is the progression of levels?
    • Egocentric-to-Allocentric transformations
    Low-level (LGN and V1) Egocentric reps Intermediate-level (IT and PP) Egocentric/Allocentric Hybrid reps Highlevel (Frontal Cortex and Hippocampus) Allocentric reps
  • 7. So, where is consciousness?
    • Not at either end of the Egocentric-Allocentric continuum
  • 8.
    • Pure Allocentric
    Pure Egocentric Retinocentric Body-centered Limited viewpoint invariance Amodal Category knowledge The Allocentric-Egocentric Interface The reciprocally influencing representations jointly comprise a conscious state
  • 9. Consciousness is not purely egocentric
    • Patient DF’s visual form agnosia (Milner and Goodale 1995)
    • Bilateral ventral stream damage to area LO
  • 10. Consciousness is not purely egocentric
    • Patient DF’s visual form agnosia
    • Perceptual consciousness of form and orientation destroyed, but sensorimotor skill intact
  • 11. Consciousness is not purely egocentric
    • Visual consciousness is conceptually informed
    • Theory ladeness of perception
    • Dog
    • Dog sniffing ground
    • Dog’s butt facing you
    • Did I mention the dog?
    What is this a picture of? Hints:
  • 12. Consciousness is not purely allocentric Thoughts alone have no phenomenal character: “ Pi is an irrational number” “ Natural selection depends on the variable inheritance of fitness” “ Democracy and capitalism are incompatible” Apparent phenomenality of thought due to associated imagery (Jackendoff 1987)
  • 13. Consciousness is not purely allocentric
    • . . .this . . . this, . . . or this . . .
    . . .but not this. THREE HOUSES Visual consciousness is never viewpoint independent. The contents are like. . .
  • 14. The need for recurrence:
      • TMS: feedback from area MT+/V5 to V1 necessary for visual awareness (P ascual-Leone & Walsh 2001)
      • Backward masking invokes feedforward activation but suppresses recurrence (Lamme 2004)
      • Feedforward activation recorded in anesthetized animals (Lamme 2004)
  • 15. State Consciousness
    • Conscious states are composed of mutually influencing egocentric and allocentric representations
    • Contra Higher Order Representational theories, metarepresentational states are unnecessary
    • Contra First Order Representational theories, involvement of higher- level (though not higher order) states is necessary
  • 16. Transitive Consciousness
    • What we are conscious of are the contents of the allocentric-egocentric hybrid reps
    • Contra HO theories, contents need not include other mental states (Transitivity is false)
    • Contra FO theories, contents need not exclude other mental states (Transparency is false)
  • 17. Phenomenal Character
    • What it is like to be in a conscious state is fully determined by the representational content of that state.
  • 18.
    • THE END