Short term memory center of the brain?

Appeared in: NIMHANS Nursing Officer - 2021

Explanation

The hippocampus is a crucial component of the limbic system located in the medial temporal lobe.
Its primary role is in the consolidation of information from short-term memory to long-term memory.
It is also essential for spatial memory, which enables navigation.
Damage to the hippocampus can lead to anterograde amnesia, the inability to form new memories, which is a hallmark of conditions like early Alzheimer's disease.

Option B: The thalamus is primarily a relay station for sensory information, not the main center for short-term memory formation. It directs sensory inputs to the appropriate cortical areas for processing.
Option C: The amygdala is the brain's center for processing emotions and is specifically involved in forming and storing memories associated with emotional events, particularly fear. It does not handle general short-term memory.
Option D: The basal ganglia are primarily involved in motor control and the formation of procedural memories, which are memories of skills and habits (e.g., riding a bicycle or playing an instrument).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Neuroanatomical basis of memory as background academic context rather than a clinical decision trigger.
Early Alzheimer's disease often begins with damage to the hippocampus, explaining why short-term memory loss is one of the first symptoms. Nurses must be adept at assessing for subtle memory changes.
Nurses can support patients with hippocampal damage by using memory aids like calendars, lists, and consistent routines to compensate for their inability to form new memories.
What if? If a patient presented with impaired emotional responses and poor decision-making but intact short-term memory, a nurse might suspect damage to the amygdala or prefrontal cortex rather than the hippocampus.

How to Approach the Question

Concept Tested & Keywords

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E6 Physiology Ganong 27e Vol 1 Part 2 p. 67-69

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Attempt every question from this paper in a timed mock, then review the full solution for each one.