NESC 3227 Lecture Notes - Eye Movement, Inductive Reasoning, Superior Temporal Sulcus

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Published on 17 Apr 2013
School
Dalhousie University
Department
Neuroscience
Course
NESC 3227
Professor
January 22nd, 2013
January-22-13
12:58 PM
Fusiform gyrus lesions
Inability to process faces and some words
o Prosopagnosia
o And pure alexia
Mr John Alden, A stranger in the mirror
Disorders
o Prosopagnosia
o Associative visual agnosia
Can describe objects in great detail and can copy, but can't tell you exactly what it is
(bird example)
o Topographical disorientation
Trouble in train station finding an exit
Compensatory strategies
o Recognition by voice, not biologically significant movement
His wife
o Recognition by feature
His wife's shoes
o Very good long-term memory
o Logic, deductive and inductive reasoning
Projections from occipital lobe: 3 visual streams
Ventral stream (what stream)
o Takes info from primary visual cortex
o Moves anteriorly
o Involved in object recognition
o Info from secondary somatosensory cortex also provides info to hear to aid in object
recognition
Dorsal stream (where stream)
o Takes info from primary visual cortex to areas of the brain more interested in action (motor
areas)
o Vision for action (where to put your hand to open door)
Superior temporal sulcus (STS)
o Involved in biological motion
Review of lecture 4, occipital lobes
Localization of the brain's visual system
o Topographical representation
Visual projections beyond the occipital lobes
***Start of Chapter 14***
The parietal lobes
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Document Summary

Inability to process faces and some words: prosopagnosia, and pure alexia. Mr john alden, a stranger in the mirror. Can describe objects in great detail and can copy, but can"t tell you exactly what it is (bird example: topographical disorientation. Trouble in train station finding an exit. Compensatory strategies: recognition by voice, not biologically significant movement. His wife"s shoes: very good long-term memory, logic, deductive and inductive reasoning. Ventral stream (what stream: takes info from primary visual cortex, moves anteriorly. Info from secondary somatosensory cortex also provides info to hear to aid in object recognition. Dorsal stream (where stream: takes info from primary visual cortex to areas of the brain more interested in action (motor areas, vision for action (where to put your hand to open door) Localization of the brain"s visual system: topographical representation. Secondary somatosensory cortex lies just posterior to this.

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