PSY100H1 Lecture Notes - Lecture 4: Learned Helplessness, Exaptation, Cerebellum
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PSY100H1 Full Course Notes
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The electrostatic gradient and the concentration gradient. High concentration of positively charged sodium and potassium outside the membrane, high concentration of negatively charged chloride ions. Positive sodium ions in, charge changes to +35 mv. The action potential and how it travels down the axon. For a brief period of time, it is extra negative and harder for it to fire. Firing over entire brain system depends on multiple neurons activating a whole network, and each neuron depends on a whole array of inputs sufficient to trigger its own action potential. Inhibition and excitation - signal strength, inhibition or excitation, some kind of summation integration. Patterns of activity patterns of connectivity. Brain is modeling itself as it models the world. The full array of neurotransmitters and their functions is extremely complex, with many variations of nts, many functions many interactions and different scales. Anti-anxiety meds help gaba bind more effectively to post- synaptic receptors.
