Term
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Definition
| Term that refers to structural or functional changes in the nervous system, or the ability to make such changes |
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Term
Associativity
Augmentation
Coincidence detector |
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Definition
In the hippocampus, the enhancement of a weakly activated group of synapses when a nearby group is strongly activated.
Repeated synaptic activity, increase in neurotransmitter release from presynaptic terminals (rise and fall within a few seconds)
process by which a neuron or a neural circuit can encode information by detecting the occurrence of temporally close but spatially distributed input signals (pg 171) |
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Term
Habituation
Long-term depression (LTD)
Long-term potentiation (LTP) |
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Definition
Less responsive to a repeated occurrence of stimulation
A persistent weakening of synapses based on recent pattern activity
A persistent strengthening of synapses based on recent pattern activity |
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Term
Post-tetanic potentiation (PTP)
Potentiation
Sensitization |
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Definition
An enhancement of synaptic transmission resulting from high-frequency trains of action potentials
Repeated synaptic activity to increase neurotransmitter release (rise and fall lasting from ten of seconds to minutes.)
Increased sensitivity to a stimuli in the area of injury. Also, a generalized aversive response to an otherwise benign stimulus when it is paired with a noxious stimulus |
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Term
Spike timing-dependent plasticity (STDP)
Synaptic depression
Synaptic facilitation |
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Definition
Timing-dependent activity, probably the result of Ca2+ signaling in the postsynaptic cell, that is required for the establishment of some forms of synaptic plasticity
A short-term decrease in synaptic strength resulting from depletion of synaptic vesicles at active synapses.
A rapid increase in synaptic strength that occurs when two or more action potentials invade the presynaptic terminal within a few milliseconds of each other. |
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