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The neural basis of Object and face recognition

The neural basis of Object and face recognition. 0. 2. TE receptive field. V1 receptive field. V4 receptive field. Ventral pathway receptive field properties. Firing rate. Stimulus. Responses of IT neurons to various stimuli. Neural Coding.

vivian-payne
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The neural basis of Object and face recognition

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  1. The neural basis of Object and face recognition

  2. 0 2 TE receptive field V1 receptive field V4 receptive field Ventral pathway receptive field properties

  3. Firing rate Stimulus Responses of IT neurons to various stimuli

  4. Neural Coding

  5. The question of specificity:Is a face cell truly a “face specific” #1 #10 #100

  6. Face selectivity in single units human MTL(Jennifer Aniston cell)

  7. Face selectivity in single units human MTL

  8. Face neuron clusters in IT

  9. Responses of IT (TE) neurons

  10. Tanaka’s stimulus reduction method

  11. Tanaka et al, 1991

  12. Tanaka Features

  13. Columns in IT

  14. Optical imaging in IT cortex

  15. Columns in IT (seen with optical imaging)

  16. Columns in IT

  17. Microstimulation of face populations in IT

  18. Cortical Microstimulation biases perceptual decisions

  19. fMRI

  20. The human visual pathways

  21. Object-Selective Regions in the Human Brain Lateral Occipital Complex: LOC > lateral view 10-4 10-10 10-4 left hemisphere right hemisphere 10-10 10-4 Malach et al., PNAS 1995 ventral view

  22. Cue-independent representations Objects from motion Left hemisphere Objects from luminance lateral Objects from texture Grill-Spector et al. , Neuron 1998

  23. Are Faces Special?Having a dedicated representation

  24. Face-related activation

  25. 256 64 16 4 2h 2V 1 Whole vs. Parts

  26. Whole vs. Parts

  27. Face blindness (Prosopagnosia)

  28. Is face blindness associated witha disfunctional FFA NO!

  29. But it may depend on the integrity of the face network (its connections with other areas)

  30. Functional organization of the human ventral areas Hasson et al., 2003

  31. Distributed & overlapping representation of faces & objects in ventral temporal cortex Haxby et al., 2001

  32. Mapping the similarity between visual categories A division between animate and inanimate objects Kriegskorte et al., 2008

  33. Mapping is similar in humans and monkeys

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