BUS 237 Lecture Notes - Lecture 2: Specific Absorption Rate, White Matter, Montreal Procedure

• School: Simon Fraser University
• Department: Business Administration
• Course: BUS 237
• Professor: Peter Tingling

Document Summary

Neuron: specialized cell that conducts neural information through the nervous system; basic building block of the nervous system. Synapse: junction of two neurons; the small gap between the terminal buttons of one neuron and the dendrites of another. Neocortex: (also cerebral cortex) the top layer of the brain. Cell assembly: group of neurons that, through repeated excitation, has become functionally organized into a circuit that provides a neural basis for perception, learning, and thinking. Most synapses involve the release of neurotransmitter from the presynaptic axon to the postsynaptic dendrite. Neurotransmitters are encapsulated in vesicles in the presynaptic neuron. Neurotransmitters can be excitatory (increases firing rate) such as. Inactivation mechanisms break down neurotransmitters in the synaptic cleft glutamate, inhibitory (decreases firing rate) such as gaba, or does both, such as acetylcholine. Neurons can have both excitatory and inhibitory synapses. Grey matter is where neurons reside whereas white matter acts as a transporter (high-way) for the neurons.