Describe the process of long-term potentiation.
What will be an ideal response?
Ans: Long-term potentiation depends on postsynaptic AMPA and NMDA glutamate receptors and the neurotransmitter glutamate. At these synapses, glutamate binds to both AMPA and NMDA receptors. Before long-term potentiation, however, glutamate only successfully activates AMPA receptors. Activation fails to occur at NMDA receptors because a Mg+2 ion blocks the NMDA receptor channel, preventing ions from entering the channel. Long-term potentiation occurs when the membrane depolarizes sufficiently to repel the Mg+2 ion from the channel.
You might also like to view...
Which statement best summarizes the focus of the Gestalt psychologists?
a. We must understand the basic components of perception. b. We need to identify the number of geons needed for object recognition. c. We want to understand how elements are added up to create sensations. d. We need to identify the neurons that create perception.
________ is an example of a direct physiological effect of stress
A) Elevated blood pressure B) Decreases in immune system functioning C) Increased hormonal activity D) all of the above
English is the first language of about __________ people.
A. 400,000,000 B. 40,000,000 C. 4,000,000 D. 4,000
A sample of n = 4 scores has ?X = 8 and ?X2 = 40. What is the value of the sample variance, s2?
A) ?2 B) ?4 C) ?8 D) ?10