PSY 2301 Lecture 4: chapter5_all
1 Mar 2016
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Document Summary
How do neurons communicate and adapt: focus on classic research, a chemical message, varieties of neurotransmitters, neurotransmitter systems and behaviour, role of synapses in learning and memory. Role of the the vagus nerve and the neurotransmitter acetylcholine (ach) in slowing heart rate. A chemical message: otto loewi (1920s): subsequent research. Accelerator nerve: speeds up heart rate: epinephrine (ep, or adrenaline) Chemical messenger that acts as a hormone to mobilize the body for fight or flight during times of stress and as a neurotransmitter in the central nervous system: norepinephrine (ne, or noradrenaline) Neurotransmitter found in the brain and in the parasympathetic division of the autonomic nervous system. Chemical released by a neuron onto a target with an excitatory or inhibitory effect. Outside the cns, many of these chemicals circulate in the blood stream as hormones. Projects a beam of electrons through a very thin slice of tissue.
