Memory Flashcards
What is the postulate that states “neurons that fire together wire together”?
Hebb’s postulate.
What receptor is activated by coincident dendritic depolarizations to initiate long term potentiation?
NMDA receptors.
What are potential dysfunctional cortical areas in an alert individual with impaired working memory of numerical sequences?
The posterior parietal cortex and the prefrontal cortex.
What cortical area is responsible for fixating attention and determining how long a number sequence can be remembered?
The prefrontal cortex.
What is a potential dysfunctional area in an alert individual who can recall distant past experience but not recent experience?
The papez circuit.
What cortical lobe contains the hippocampus?
The medial temporal lobe.
What does blockage of declarative memory encoding usually require?
Bilateral temporal pathology.
What are the components of the papez circuit?
The hippocampus (medial temporal lobe), mammillary bodies (diencephalon), anterior nucleus of the thalamus, amygdala, cingulate gyrus, and entorhinal cortex.
What vitamin deficiency can cause bilateral necrosis of the mammillary bodies?
B1 (thiamine). Deficiency results in Wernicke’s/Korsakoff’s syndrome (seen in alcoholics).
