Which of the following statements regarding long-term potentiation (LTP) is NOT correct? A. LTP is a long-lasting increase of synaptic strength B. The initial phase of hippocampal LTP is due to a decrease of AMPA receptors at the cell surface by internalization of the receptors C. LTP can be induced by a brief (few seconds) high-frequency patterned stimulus D. LTP requires postsynaptic depolarization E. LTP is a mechanism for the acquisition of new information Reset Selection
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Long-term potentiation is a persistent strengthening of synapses based on recent patterns of activity. Show more…
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Which statement about long-term potentiation (LTP) is false? A. During normal, low-level activity, the release of glutamate at the synapse activates only the AMPA receptors. B. NMDA receptors cannot ordinarily respond to glutamate because magnesium ions block the NMDA receptor's calcium ion channel. C. Strong stimulation of AMPA receptors depolarizes the postsynaptic membrane so much that the Mg2+ plug is driven from the central channels of the NMDA receptors. D. NMDA receptors are fully active only when 'gated' by a strong depolarization (via AMPA receptors) and the ligand calcium.
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Long-term potentiation (LTP) seems to provide a neural basis for learning and memory. LTP refers to a. emotion-triggered hormonal changes. b. the role of the hippocampus in processing explicit memories. c. an increase in a synapse's firing potential after brief, rapid stimulation. d. aging people's potential for learning.
Which of the following statements about long term potentiation is FALSE? Long term potentiation of synapses lasts as long as several hours. Long term potentiation involves growth of the cell body Long term potentiation requires simultaneous discharge of pre- and postsynaptic cells. Long term potentiation involves the growth of dendritic spines.
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