PSYB65H3 Chapter Notes - Chapter 4-6, 9: Optical Flow, Superior Colliculus, Nalorphine
23 Sep 2016
School
Department
Course
Professor
Document Summary
Early clues that linked electricity and neuronal activity. Galvani discovered electrical stimulation passage of an electrical current from the uninsulated ti of an electrode through tissue, resulting in changes in the electrical activity of the tissue. Hitzig & fritsch demonstrated that electrical stimulation of the neocortex causes movement. Bartholow wrote the first re ort describing the effects of human brain stimulation. Bernstein"s idea was that successive waves of electrical change constitute the message conveyed by the neuron. Hemholtz first measured s eed of information flow in nerve. Giant axon of the squid- most animal neurons too small to be seen (1-20 micrometer) Loligo has giant axons sends faster messages. Hodgkin and huxley were able to dissect axon and kee alive in salty water. How the movement of ions creates electrical charges. 4 charged articles involved: more large rotein molecules & k inside more na and cl outside.
