PSY 324 Lecture Notes - Lecture 3: Midbrain, Main Source, Adrenal Gland
6 Mar 2018
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Document Summary
How do we study the (human) brain: examine effects of brain damage, examine effects of brain stimulation, record brain activity during behaviour, correlate brain anatomy with behaviour. Effects of brain damage: ablation: removal of a brain area, lesion: damage to a brain area, can be naturally- or experimentally-caused. Effects of brain damage: transcranial magnetic stimulation (tms), apply intense magnetic field to a portion of the scalp to temporarily deactivate neurons below the magnet, experimental lesion, but reversible! Effects of brain stimulation: stimulation of a brain area modify behavior, electrodes can probe the brain of someone undergoing brain surgery. Record brain activity: electroencephalography (eeg), records electrical activity produced by the brain at the scalp, non-invasive! Record brain activity: magnetoencephalography (meg), similar to eeg but measures faint magnetic fields generated by brain activity instead, positron-emission tomography (pet), detects where in the brain a radioactive form of glucose goes while the brain performs a task.
