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CH. 3-BIOLOGICAL FOUNDATIONS of BEHAVIOR-Part 2
Transcript of CH. 3-BIOLOGICAL FOUNDATIONS of BEHAVIOR-Part 2
Left hemisphere is involved mainly with
analysis => processes information sequentially,
focusing on small details.
Right hemisphere appears to process information
holistically and simultaneously, seeing the
4 Lobes of the Cerebral Cortex
1. Frontal Lobe - Higher Mental Abilities , Primary Motor Cortex. Association Cortex
2. Parietal Lobe - Primary Somatosensory Cortex - Touch, Temperature, Pressure.
3. Temporal Lobe- Primary Auditory Area - Wernicke's Area
4. Occipital Lobes - Primary Visual Area.
THE BRAIN IN DIFFERENT SPECIES
Exploring Brain Function
EEG- Electroencephalograph - amplifies brain waves and records them on a moving sheet of paper or computer screen.
PET Scan - Positron Emission Tomography- detects positrons emitted by weak radioactive glucose (sugar) as it is consumed by the brain. Shows areas using more energy.
fMRI- functional MRI- techniques that record brain activity - parts which are more active.
Near Infrared Spectroscopy - changes in blood oxygenation and flow to different areas of the brain.
CH. 3 -BIOLOGICAL FOUNDATIONS OF BEHAVIOR
Part 2 -
Mapping Brain Structures
CT- Computed Tomographic) - Computer enhanced X-rays are taken from a number of different angles to form an image of the brain.
MRI- Magnetic Resonance Imaging - uses a very strong magnet to produce an image of the body's interior.
In Einstein, the parts of the brain necessary for spatial reasoning
in the parietal lobe had a unique anatomy => larger than in
PHINEAS T. GAGE
NEAR INFRARED SPECTROSCOPY
Lateral View of the Brain
PET-Positron Emission Tomography Clinnovo Research Labs
Picturing the Brain NIBIBgov
Does The Size Of Your Brain Matter?
Human brains compared to other animals
Lessons of the brain: the Phineas Gage case
LESIONS OF THE BRAIN-
Brain Lesioning is an abnormal disruption in the tissue of the brain, resulting from injury or disease.
SUBCORTEX - the name
for all brain structures
below the cerebral cortex.
3 Main Structures of the Brain
1. Hind Brain - Brain stem, Medulla, Pons, Cerebellum
2. Fore Brain - Thalamus, Hypothalamus, Amygdala (Limbic System)
3. Mid Brain - Right above the brain stem, Conduction & Switching Center
Thalamus-relays sensory information to the cerebral cortex.
Hypothalamus-Regulates emotional behaviors and motives.
Amygdala - Part of the limbic system associated with fear responses.
Hippocampus - Part of the limbic system associated with strong memories (under cerebral cortex).