PSYA01H3 Lecture Notes - Lecture 9: Visual Cortex, Cerebral Cortex, Temporal Lobe

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PSYA01 – Introduction to Psychology Part 1 Chapter 3.2
The Brain – Part 1
Cortex versus Midbrain
The cerebral cortex is the place where high level perception of the world occurs, and is also the
place where controlled motor activities originate. In this sense, it is the place where all our
controlled interactions with the external world occur.
This contrasts with a number of more basic brain regions which are more devoted to monitoring
and controlling internal behaviours and automatic responses to external stimuli.
The Cortex
Parietal Lobe
Interpreting sensation on the body input of the world
Occipital Lobe
Interpreting visual input of the world
Temporal Lobe
Interpreting auditory input of the world
Primary VS Association Cortex
Primary Cortex
Direct sensory (or motor) connections
Association Cortex
Takes the raw stimulus and interpret it
Via memory
EXAMPLE: THE CAT IN THE HAT
Contralateral Organization
In many cases (example: control of our body)
the left side of the brain relates to the right side of the body or space
the right side of the brain related to the left side of the body or space
Lateralization of Function
Lateralization – the notion that the brain is composed of separate hemispheres creating left
and right sides of all cortical tissue, and sometimes the left and right have different priorities
Occipital Lobe
The occipital (and lower part of the temporal) lobes are devoted to vision (visual)
Primary visual cortex is directly related to sight, and damage to it produces a hole in a
person’s visual field… a scitoma (damage to you visual field)
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Document Summary

The cerebral cortex is the place where high level perception of the world occurs, and is also the place where controlled motor activities originate. In this sense, it is the place where all our controlled interactions with the external world occur. This contrasts with a number of more basic brain regions which are more devoted to monitoring and controlling internal behaviours and automatic responses to external stimuli. Interpreting sensation on the body input of the world. Primary cortex: direct sensory (or motor) connections. Association cortex: takes the raw stimulus and interpret it, via memory. Lateralization the notion that the brain is composed of separate hemispheres creating left and right sides of all cortical tissue, and sometimes the left and right have different priorities. Chapter 3. 2: association cortex in this area performs the function of providing an interface between visual input and memory allowing one to categorize visual images.

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