Psychology 1000 Lecture Notes - Lecture 4: Midbrain, Reward System, Phineas Gage

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Jackson

Document Summary

Somatic ns (aka skeletal ns: connects to sensory receptors and skeletal muscles, autonomic ns (regulates internal organs and glands) breaks down into 2 parts: Discovered in the 1950s using a giant squid. Neurons at rest, tend to have negatively charged potassium ions in the cell and positively charged sodium ions out of the cell. Alzheimer"s related to low levels of this), norepinephrine (slowing intestinal activity during stress, learning, memory, dreaming, waking, emotion: pathways, reward system + addiction, dopamine and serotonin work together, commonly used brain imaging techniques, eeg (a bit old) ), hindbrain (regulates basic survival), midbrain (regulates emotional processing: brain stem diagram: first 3 points, medulla: connects the brain to the spinal cord. Part of the survival function (cid:1445)dull(cid:1446) = basic stuff breathing, heart rate, etc: ras (reticular activating system) helps with consciousness, core of the brain stem, reticular = tickle/arouse consciousness/cortex and screens incoming. Extends into the centre of the brain info.