PSYB65H3 Chapter Notes - Chapter 4: Hermann Von Helmholtz, Luigi Galvani, Richard Caton
Document Summary
Chapter 4 how do neurons use electrical signals to transmit. 4. 1 searching for electrical activity in the nervous system: early discoveries about the nature of electricity led to proposals that it plays a role in conducting information in the nervous system. Early clues that linked electricity and neuronal activity: stephen gray rubbed a rod with a piece of cloth to accumulate electrons on the rod. Julius bernstein chemistry of neurons produces an electric charge, the charge can change and act as a signal: successive waves of electric charge make up the message sent by the neuron. Tools for measuring a neuron"s electric activity: waves that carry messages are very small and restricted to the surfaces of neurons, can measure the waves using electrical stimulation and electrical recording techniques and determine how they are produced. Giant axon of the squid: the neurons of many animals are too small to see by the eye and too small to perform experiments easily.
