PSYC 106 Lecture Notes - Lecture 5: Carl Wernicke, Paul Broca, Microtome
Document Summary
Phrenology: the study of the bumps on someone"s head. Clinical evidence from strokes: paul broca, carl wernicke observed people with stroke issues and then their brains after they died, understood that certain strokes lead to specific language problems. If you stimulate the motor cortex, the limb moves. Controversial because he has no proof the memories were real. 1 neuroanatomy: use to describe shape of brain. A. freeze or embed brain, slice with a microtome, stain the brain. B. label projections premortem using tracers, then look at tissue postmortem. Used when you want to see what parts of the brain connect to what. Retrograde tracers: transport from axon terminals to cell bodies, move. Upstream , you see what regions project into the regions you injected the tracer into. Anterograde tracers: transport from cell bodies to axon terminals, move. Downstream , see what the tracer-injected tracer connects to. C. image different structures in the living brain.
