PSY10000 Lecture Notes - Lecture 8: Temporal Lobe, Positron, Endocrine System
7 Nov 2017
School
Department
Course
Professor
Document Summary
Lecture: midbrain (mesencephalon, newer (motor + metabolic, tegmentum. Reticular activation system (ras): in charge of arousal and sleep- waking states: tectum. Benefit: looking at a live image (structure) Put electrodes long the scalp (measure voltages from brain"s ionic currents) Examining how the recorded signal changes over a time interval. Different patterns can emerge depending on what a person is thinking about. Mapping brain activity by recording magnetic fields produced by the electrical currents in the brain. Good to know for when something happens but not where it happens in the brain: transcranial magnetic stimulation (tms): Stimulate neurons un a specific area of the brain using magnets. Can activate/deactivate a small region in a person"s brain. The overlap of the magnetic fields causes neurons to activate (an electric field is also formed: blood flow measures, neurons are working harder = they need more oxygen (more blood flow, positron emission tomography (pet): Radioactive isotope is injected in the bloodstream.
