Describe the changes that occur in the synapses of the hippocampus that may provide a physiological basis for long-term potentiation (LTP)
What will be an ideal response?
Answer: LTP is an increased EPSP recorded from dentate cells to a single electrical pulse, when that pulse was preceded by high-frequency electrical stimulation of axons that connect with the dentate gyrus cells. There is evidence that more glutamate may be released from the presynaptic terminal button (perhaps due to the influence of nitric oxide from the postsynaptic cell). On the postsynaptic side, LTP is accompanied by physical reorganization of the dendrite, which includes the insertion of AMPA receptors into the dendrite (more sensitivity to glutamate) and the formation of new dendritic spines, which would serve to increase the postsynaptic response to glutamate.
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In societies characterized by high power distance, organizations would tend to emphasize differences in rank and position.
a. true b. false
Which of the following definitions accurately describes the state of coma?
a. A prolonged state of consciousness similar to non-REM sleep b. A state marked by a complete loss of consciousness c. A disordered state of consciousness marked by the ability to show some behaviors that suggest at least partial consciousness, even if on an inconsistent basis d. A state of minimal consciousness, where the patient's eyes may be open, and he or she experiences a sleep-wake cycle