week_7_vision2_3 - How Do We See? II Circuitry in the...

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HD220 Fall 2006 1 Temple, 2006 1 How Do We See? – II Circuitry in the Visual System Week 6, Lecture 1 Temple, 2006 2 Announcements • Prelim 1 is graded and will be returned today – We will discuss at end of lecture • If doing poster option need to tell me and get topic approved by fall break. – Otherwise I assume you are NOT doing poster Temple, 2006 3
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HD220 Fall 2006 2 Temple, 2006 4 Circuitry in the Visual System • Review from Tuesday • Location: How does our brain know where objects are located? • Shape: How does our brain recognize shapes? • Motion: How does our brain recognize movement? • Injuries to Visual Pathways Temple, 2006 5 Retinal Neurons Parvocellular P cells Receive info from cone cells Sensitive to color Magnocellular M cells Receive info from rod cells Sensitive to movement Temple, 2006 6 Review: Retina to Brain Ganglion cells Optic Nerve Optic Chiasm Visual thalamus LGN Visual Cortex
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HD220 Fall 2006 3 Temple, 2006 7 Review: “What” / “Where” Pathways Where pathway What pathway Temple, 2006 8 Review: Parallel Processing • Visual system separates info and processes it in parallel stream – Each visual field is processed separately – Each eye is processed in separately • Ocular dominance columns in visual cortex – Color vs black/white is processed separately • Cones and rods – Motion and object are processed separately • Dorsal and ventral stream
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This note was uploaded on 09/28/2008 for the course HD 220 taught by Professor Anon during the Fall '06 term at Cornell University (Engineering School).

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week_7_vision2_3 - How Do We See? II Circuitry in the...

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