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Lecture 2

PSYC 1000 Lecture Notes - Lecture 2: Hypothalamus, New Scientist, Neuroimaging

Course Code
PSYC 1000
Jeffrey Yen

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Psychology Lecture #4: Wednesday Sept. 17, 2014
Module 5
Brain Research & The Primitive Brain
“Lizard Brain”
Parts of brain that have evolved
How the brain is similar to that of other species/animals
Brain Research Strategies
Dissections -> observe different tissues, structures, connections
Damaged/Abnormal Brains -> gives us clues of how the brain functions when
certain parts aren’t working ex. Phineas Gage: metal rod through skull, only lost
parts of cognitive function (personality only),
Changing the Brain (ex. chemical numbing) -> numbing a part of it to see what
Visualization Technologies -> MRI
Damaged Brains:
- Visual Agnosia (visually presented objects cannot be processed)
- Aphasia (lack of ability to produce/understand language)
- Anterograde Amnesia (unable to remember anything that happens subsequent to
the injury- no memory after injury)
Split Brain Patients
- Severing of Corpus Callosum (part between two halves of brain is cut)
- Hemispheric differences in brain “functions” (right and left side are different)
(opposite linkage across brain- if right side is damaged you cannot see out left
side) Visual = right, Language = left
- Narrative Self
- Functional (show you activity living brains) vs. Structural Techniques (show you
structure of the brain)
- Functional: shows brain activity in living brains (PET, fMRI)
The “Primitive” Brain:
Limbic System
The Brain Stem & Thalamus
Oldest structures of the brain
Begins where the spinal cord enters the skull
Medulla controls basic functions (breathing)
Pons control automatic and unconscious movements
Reticular Formation
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