PSYB65H3 Chapter Notes - Chapter Midterm: Axon Terminal, Axon Hillock, Chemical Synapse
Document Summary
First conducted by stephan gray who rubbed a rod to accumulate a charge and touched a boy s feet with the rod which did not elicit and response until a metal foil was brought to the boy"s nose. Meant electricity might be a messenger of the nervous system. Hitzig demonstrated that electrical stimulation of neocortex can cause movement. Voltmeter: device that measures the flow and strength of electrical voltage by recording the difference in electrical potential between two bodies (first measured by richard caton) Caton claimed he could detect fluctuations in voltmeter recordings by placing electrodes on the skull, today this brain recording is called eeg. Electroencephalogram (eeg): graph that records electrical activity through the skull/brain and represents graded potentials of many neurons. Work s by monitoring sleep stages and record waking activity as well as to diagnose disruptions such as those that occur in epilepsy. Flow of information in nervous system is too slow to be electricity.
