PSYC 1010 Chapter Notes - Chapter 3: Hebbian Theory, Donald O. Hebb, Myelin

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Doug Mc Cann

Document Summary

3. 1a: nervous tissue: neurons: cells that receive, integrate and transmit information. 3. 1b: neural impulse: resting potential of neuron : stable negative charge inside axon when cell is inactive, action potential : brief shift in axon neuron charge that travels along the axon o o. Voltage ion gated channels : allow sodium ions to enter axon changes charge to. After charge moves along axon channels close: absolute refractory period : minimum length of time between action potentials, all or none law : energy of action potential of neuron is equal regardless of "strength" of neurotransmitter o. Strength of stimulus is recognized by the frequency of action potential: speed: +300km/hou or 100m/sec. 3. 1c: synapse: synaptic cleft : gap between terminal buttons and dendrite membrane, presynaptic neuron : sends signal before synapse, postsynaptic neuron : send signal after synapse, synaptic vesicles: vesicles that carry neurotransmitters, process: