PSY318H5 : Lecture notes and notes from book (Fundamentals of Human Neuropsychology)

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27 Apr 2011
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Decreased the beating of frog heart immersed in a fluid through electrical stimulation of the vagus nerve. The fluid was transferred to a second frog heart. The beating of the second frog heart decreased as well. Conclusion: the vagus nerve releases chemical that slows down the heart. Discovered the neurotransmitters acetylcholine (ach) and epinephrine (ep) Ach is inhibitory on organs in the ans but excitatory on body muscles connected to sns. Effects of neurotransmitters determined by receptors and receptor subtypes. Space between the axon terminal and the dendritic spine. Information is transmitted across a synapse in four basic steps: z-(slower-acting class) or building blocks are imported and stored in the cell (quicker-acting class) then gathered in synaptic vesicles that are stored: The action potential opens calcium channels in the presynaptic membrane www. notesolution. com. The action potential opens calcium channels in the presynaptic membrane. A molecular complex then triggers the release of neurotransmitter into the synaptic cleft.