Bilateral temporal damage ->hippocampus Flashcards

1
Q

Amnesia occurred after some cases of (thin, HM)

A

unilateral temporal lobectomy that was used to treat epilepsy - now do WADA testing

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2
Q

Hippocampus vulnerability to damage: Case reports of patients with cardiac arrest and anoxia

A

were amnestic - at autopsy CA1 “was gone”

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3
Q

Why is CA1 so susceptible to anoxia, seizures, hypoglycemia?

A

Many neurons in hippo have NMDA receptors and metabolic disturbances of various kinds cause release of glutamate that activates NMDA receptors that allow Ca+ to enter and destroy neuron

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4
Q

If animals are pretreated with NMDA blockers,

A

anoxia is much less likely to produce brain damage

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5
Q

Many NMDA neurons make it easy to

A

establish long-term potentiation that allows fast learning, but also makes the area vulnerable to self-destruction when metabolic disruptions occur

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