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 BIOL3833 Week 14:  Neurobiology of Vision Part 2  BIOL3833 Week 14:  Neurobiology of Vision Part 2

BIOL3833 Week 14: Neurobiology of Vision Part 2 - PowerPoint Presentation

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BIOL3833 Week 14: Neurobiology of Vision Part 2 - PPT Presentation

Encoding in the retina Encoding Ganglion cells have centersurround receptive fields Rods send information to magnocellular pathway Cones send information to parvocellular pathway Lateral Geniculate Nucleus ID: 776334

neurons cortex visual perceive neurons cortex visual perceive reveal send pathway experience expectations change cells motion networks encoding primary

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Presentation Transcript

Slide1

BIOL3833

Week 14: Neurobiology of Vision Part 2

Slide2

Slide3

Slide4

Encoding in the retina

Slide5

Encoding: Ganglion cells have center/surround receptive fields

Slide6

Rods send information to

magnocellular

pathway

Cones send information to

parvocellular

pathway

Slide7

Slide8

Slide9

Lateral Geniculate Nucleus

Meissirel

C et al. PNAS 1997;94:5900-5905

©1997 by National Academy of Sciences

Slide10

Slide11

Primary Visual Cortex

Hubel Wiesel LGN neuronsSimple Cell (V1)

Slide12

Creating simple cells

Slide13

Slide14

Hypercolumns

in Primary Visual Cortex (V1)

Slide15

Cortical vision processing: Two “streams”

Slide16

Two different sources of motion illusion

Superior

colliculus

Visual cortex

Slide17

Slide18

What does the superior

colliculus

do?

Slide19

+

Slide20

BLUE

+

Slide21

Slide22

+

Slide23

Slide24

Slide25

Slide26

Fatiguing neurons in MT (V5)

http://michaelbach.de/ot/mot-adaptSpiral/index.html

http://www.youtube.com/watch?v=tVgOLWVYytM

Slide27

Split-depth illusions

Reveal the role of competition between networks of motion-sensitive neurons

Slide28

Top-down processing

Our experience and expectations change what we perceive

Slide29

Slide30

Slide31

Bistable perceptions

Our experience and expectations change what we perceive

And reveal competing networks of neurons

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