PSYCH 1XX3 Lecture Notes - Lecture 5: Voltage-Gated Potassium Channel, Myelin, Saltatory Conduction
18 Apr 2017
School
Department
Course
Professor
Document Summary
Descartes" dualistic perspective: mind was seen as a separated entity existing outside of our biology, yet in control of our actions and thoughts. Neuroscience studies how the biological nervous system produces mental processes. Challenge to understand how the biological brain produces the mental processes of the mind. Neurons are communication cells; the receptive zone receives neural signals and the transmission zone passes them on to other cells. 100 billion neurons in brain are organized into signaling pathways to communicate via synaptic transmission. Receptive zone and dendrites: receive signals from other neurons. Transmission zone and the axon: pass signals to other cells. Cell body - # of projections called dendrites, which look like long, stretching branches of a tree. Dendrites reach out to other neurons and receive signals to be relayed through dendrites branch to cell body. The neural signal is transmitted from the axon to its terminal boutons, and further to the receptive zone (dendrites) of nearby neurons.
