PS271 Lecture Notes - Lecture 4: Transcranial Magnetic Stimulation, Cerebral Cortex, Brainstem
Document Summary
Damaged areas are studied to see how their malfunction affects. Brain stimulation active/turn off areas to see what changes. Imagine techniques face the challenge of all areas of the brain always being stimulated. We can use bold (blood oxygen level dependant) to see which areas have the most oxygen (activity) Extraverts: less active, so they seek exciting things to spike them up. Introverts: more active, so they seek calming activities. Fun fact: mindful meditation for 30 minutes each day for 8 weeks showed to increase left. Ascending reticular activating system (aras): brain stem -> cerebral cortex. This was a guy who had a railroad spike fly right through his skull and survived. His personality became silly like a child & he wasn"t very socially acceptable anymore. A client who had frontal lobe damage from an accident. Formerly a regular, organized lady, she became messy & dirty. Somatic marker hypothesis: proposes that emotional processes guide behavioural decision-making.
