Foundations Course: Vision (R Siegel)
                \textpc\talks\[VISOLECT.DOC] [November 30, 1992]

Retinal lecture: Reading Chapter 28 in Kandel Jessel and Schwartz
Higher Vision: Chapters 29, 30 and 31

1 Retina.

* Laminar structure
* Rods/cones - role in acuity, differences
* Horizontal Bipolars
* Amacrine
* Ganglion output to optic nerve
* Function - log transduction of light
* Wavelength selectivity - spectrum
* Lateral inhibition
* What the retina sees .. the idea of a filter.

2 Lateral geniculate nucleus and other projection zones of retina

* Optic Chiasm - split field representation
* Parvo/magnocellular laminations  M=1,2 P=3,4,5,6
* Maintained receptive field organization.
* Function - setting up initial maps for rest of cortex to use.
* Don't forget also rt/left eye representation.

* Midbrain pre-tectal area (pupillary reflex)

* Superior colliculus (eye movements) - other inputs also

3 Primary visual cortex

   3.1 Another retinotopic map - 2DG studies.

   * Critical ORIENTATION selectivity
   * Orientation columns
   * Ocular dominance.
   * Sub-structure of v1, blobs/inter-blobs columns, maps in maps
   * Cytochrome oxidase blobs.

   3.2 Development of ocular dominance - Wiesel's work

   * Critical period for development of ocular dominance

   3.3 Laminar structure

   * Gilbert's end stopping story - the role of the laminar organization.

4 Extra-striate cortex (pre-striate, circumstriate)

   4.1 Two or three pathways - what and where -> motion, depth/form, color

   * What defines a visual area? - borders, representations (Van Essen)
   * Plethora of representations.
   * Putting it back together - binding problem

   4.2 Some visual function

   * Motion - middle temporal area, map of motion within retintopic map
   (Albright), aperture problem, hierarchial underlie more complex motion
   analysis
   * Binocular vision - combining the images (disparity tuning)
   * Color - color constancy - three cones, V1 tuning,
   * Form - face cells
   * Space - combination of eye and retinal position parietal lobe fcn