PSYB65H3 Lecture Notes - Limbic System, Clan Maclean, Brainstem
Document Summary
Cns- consists of the brain and the spinal cord. Pns- everything else, nerves from spinal cord to the rest of the body (gather information or sends information out to control muscles) Subdivision of the brain; fore brain, midbrain and hindbrain. Midbrain- contains the reticular formation (controlling sleep wakefulness cycles circadian rhythms wake up and fall asleep ) stroke in this area leads to a coma. Anterior towards the nose, posterior- towards the tail. Limbic system- comprised of the amygdala, the hippocampus, hypothalamus, olfactory bulb, evolved in emotion and emotionality. Cerebral cortex (most anterior structure) known as the neo (new) cortex, massive part of the brain largest most complex and evolved part of the brain gives us intellectual reasoning ability to store information, Epilepsy in the amygdala- people become extremely aggressive. Larger forebrain (cortex) more evolved and intelligent species. Humans do not have the largest cortex, elephants do, dolphins have the biggest cortex in relation to body weight.
