PS268 Chapter Notes - Chapter 4: Amygdala, Nucleus Accumbens, Caudate Nucleus
The Brain
Major Structures:
Cerebrum:
-cerebral cortex, layer of tissue that covers top and sides of upper parts of brain
-some areas involved in processing visual info, others auditory or somatosensory
-smaller areas involved in control of muscles (motor cortex)
-large areas referred to as association areas
-higher mental processes (reasoning/language) occur in cerebral cortex
-when a person is asleep or sedated, cortex is much less active
Basal Ganglia:
-under cerebral cortex on each side of brain (hidden from external view)
-consists of (1) caudate nucleus (2) putamen (3) globus pallidus
-important for maintenance of proper muscle tone
-too much output results in muscular rigidity in arms, legs, and facial muscles (can occur if
Parkinson's damages basal ganglia or as side effect of some drugs)
Hypothalamus:
-small structure near base of brain just above pituitary gland
-important link between braian and hormonal activity of pituitary
-involved in feeding, drinking, temperature regulation, and sexual behaviour
Document Summary
Cerebral cortex, layer of tissue that covers top and sides of upper parts of brain. Some areas involved in processing visual info, others auditory or somatosensory. Smaller areas involved in control of muscles (motor cortex) Higher mental processes (reasoning/language) occur in cerebral cortex. When a person is asleep or sedated, cortex is much less active. Under cerebral cortex on each side of brain (hidden from external view) Consists of (1) caudate nucleus (2) putamen (3) globus pallidus. Too much output results in muscular rigidity in arms, legs, and facial muscles (can occur if. Parkinson"s damages basal ganglia or as side effect of some drugs) Small structure near base of brain just above pituitary gland. Important link between braian and hormonal activity of pituitary. Involved in feeding, drinking, temperature regulation, and sexual behaviour. Connected structures involved in emotion, memory for location, level of physical activity. Includes (1) amygdala (2) nucleus accumbens (3) hippocampus and more.
