PSYC 1010 Lecture Notes - Postsynaptic Potential, Twin, Central Nervous System

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Jill Bee Rich

Document Summary

Impaired glial cells may contribute to schizophrenia and mood disorders. The neural impulse: using energy to send information. Work of alan hodgkin and andrew huxley (squid axons used) The neuron at rest: a tiny battery: resting potential of a neuron is its stable, negative charge when the cell is inactive. The all or none law: a neuron either fires or doesn"t, signals travel at 100 m/s or 300 km/h. Integrating signals: neural networks: thousands of signals are fired at a specific neuron at one time. Neurotransmitters and behaviour: there are 9 well established neurotransmitters, neurotransmitters are specific to receptors. 40 additional neuropeptide chemicals that sometimes act as neurotransmitters. Acetylcholine: only transmitter between motor neurons and voluntary muscles, contributes to attention, arousal, and memory. Inadequate amounts are associated with memory loss and even alzheimer"s: drug treatments available to amplify levels of acetylcholine to treat alzheimer"s, agonist: chemical that mimics the action of a neurotransmitter (ex.