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12 Cards in this Set
- Front
- Back
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synaptic space
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tiny gap between the axon terminal of one neuron and the dendrites or cell body of the next neuron
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terminal button
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structure at the end of an axon terminal branch
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synaptic vesicles
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tiny sacs in a terminal button that release chemicals into the synapse
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neurotransmitters
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chemicals released by the synaptic vesicles that travel across the synaptic space and affect adjacent neurons
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receptor sites
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locations on a receptor neuron into which a specific neurotransmitter fits like a key into a lock
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sensation
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the experience of sensory stimulation
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perception
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the brain's interpretation of sensory information so as to give it meaning
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consciousness
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our awareness of various cognitive processes, such as sleeping, dreaming, concentrating and making decisions
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waking consciousness
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mental state that encompasses the thoughts, feelings and perceptions that occur when we are awake and resonably alert
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altered states of consciousness
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mental states that differ noticeably from normal waking consciousness
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stage 1 of sleep
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brain waves are tight and of very low amplitude, resembling those recorded when a person is alert or excited, light sleep, only last a few moments, easily woken
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stages 2 and 3 of sleep
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brain emits very slow delta waves, heart rate, breathing rate, blood pressure and body temperature are as low as they will get during the night
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