pradeep_slides (1)

pradeep_slides (1) - Embodiment illusions via multisensory...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Embodiment illusions via multisensory integration COGS160: sensory systems and neural coding presenter: Pradeep Shenoy 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The illusory hand 2 Botvinnik, Science 2004 2
Background image of page 2
This hand is my hand An illusion of ownership induced by synchronous touches to visible fake hand and hidden own hand. Visual and tactile information integrated to recalibrate location of hand Testable via self-report, proprioceptive drift, response to threats, and brain activity 3 3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Necessary conditions for illusion Minimize visual, tactile and proprioceptive discrepancy: fake hand of same laterality, and oriented similarly to real hand synchronous touches to both hands, at approximately the same position fake and real hands placed close to each other (<35cm) 4 Petkova, Ehrsson, PLoSONE 2009 4
Background image of page 4
Testing effect of illusion Self-report degree of ownership via questionnaires compare against asynchronous touches (control condition) Blind pointing to location of hand measurable error in perceived location, despite proprioceptive feedback Skin conductance response to threat to fake hand , e.g., with a knife shows fear/avoidance response similar to when real hand is threatened 5 5
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Neural basis of fake hand illusion Brain responses (fMRI) recorded when fake hand threatened with a sharp needle. Illusion induced via synchronous touches
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/15/2011 for the course COGS 1 taught by Professor Lewis during the Spring '08 term at UCSD.

Page1 / 19

pradeep_slides (1) - Embodiment illusions via multisensory...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online