NSCI 1001 Lecture Notes - Lecture 3: Neurotransmission, Haloperidol, Axon Terminal
3 Oct 2018
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Information flow: d c a: direction of information e c e c e (receive, process, transmit) Transmitting chemical signal: between the axon terminal and other neuron"s dendrite, there is a space called the synapse, chemical signals crossing the synapse from the presynaptic side to the post synaptic side form the basis for chemical communication. Action potential: action potentials are found mainly in the axon. Depolarization where the cell body meets the axon determines whether an action potential will travel down the axon: cell body has to make decision when processing information. Graded potential- found mainly in the dendrites and cell body. Neural code: excitation is represented by an increase in the rate of action potentials, whereas inhibition is a decrease in action potentials. Graded potential neural code: following receptor activation, electrical changes can produce either: Stimulation- the neuron is more positive (depolarization); if it is strong enough than action potential is trigger.
