Long-term potentiation (ltp) involves repeated electrical stimulation resulting in a in synaptic effectiveness. a. high-frequency; long-lasting decrease b. high-frequency; short-term decrease c. high-frequency; long-lasting increase d. low-frequency; long-lasting decrease

(C) is the most correct answer. With long-term potentiation, a high-voltage stimulus is attached to the neuron. Over time, this increased stimulation without time allowed for a refractory period will render the neuron incapable of firing when its depolarization reaches the proper threshold.

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