PSYCH 7A Lecture Notes - Lecture 6: Peripheral Nervous System, Adrenal Gland, Auditory Cortex
29 Jun 2018
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PSYCH 7A - Lecture 6 - Biology of Behavior (cont.)
Cerebellum
●Extends from the rear of the brainstem.
●Looks like a miniature brain.
●Contributes to balance
●Coordinates muscles for smooth, precise movements
●Also seems to be involved in: attention and language, certain emotional functions
Thalamus
●Sits on top of the brainstem
●The brain’s sensory switchboard
●Receives information from the eyes, ears, skin – all the senses except for smell – and
sends those signals up to the cerebral cortex for processing. It also transmits replies
from the cortex to the medulla and cerebellum
●Relays touch signals to the sensory cortex, visual info to the visual cortex, etc.
The Limbic System
●Located between the brainstem and the cerebral hemispheres
●Involved in emotion, memory, and drive
●Limbic System includes the amygdala, the hypothalamus, and the hippocampus
Amygdala
●Emotion – aggression and fear
●Lesion the amygdala - wild animals turn mellow
●Stimulate the amygdala - mellow animals either prepare to attack or cower in fear
Hypothalamus
●Lies just below the thalamus (hence the name!)
●Regulates bodily functions/drives (e.g. thermoregulation, hunger, thirst)
●Controls the pituitary gland
●The major link between the nervous system and the endocrine system
Hippocampus
●Involved in memory consolidation (i.e. making memories permanent)
Cerebral Cortex
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Document Summary
Psych 7a - lecture 6 - biology of behavior (cont. ) Extends from the rear of the brainstem. Also seems to be involved in: attention and language, certain emotional functions. Receives information from the eyes, ears, skin all the senses except for smell and sends those signals up to the cerebral cortex for processing. It also transmits replies from the cortex to the medulla and cerebellum. Relays touch signals to the sensory cortex, visual info to the visual cortex, etc. Located between the brainstem and the cerebral hemispheres. Limbic system includes the amygdala, the hypothalamus, and the hippocampus. Lesion the amygdala - wild animals turn mellow. Stimulate the amygdala - mellow animals either prepare to attack or cower in fear. Lies just below the thalamus (hence the name!) Regulates bodily functions/drives (e. g. thermoregulation, hunger, thirst) The major link between the nervous system and the endocrine system. Involved in memory consolidation (i. e. making memories permanent)
