What is the Origin of Working Memory Capacity?

Derived from cognitive psychology, "working memory" describes the mental workspace required for immediate information processing. Capacity refers to the limited number of information chunks the system can effectively manage at any given moment. Its relevance in this domain highlights the direct link between systemic physiology and higher cognitive performance.

What is the Mechanism of Working Memory Capacity?

The mechanism supporting capacity relies heavily on optimal signaling within the prefrontal cortex, modulated by dopamine and norepinephrine neurotransmission. Furthermore, adequate cerebral energy supply, supported by stable glucose metabolism and mitochondrial function, is essential for maintaining the neural circuits involved in active maintenance. Hormonal status, particularly thyroid and sex hormone levels, influences receptor density and synaptic plasticity required for robust capacity.

Working Memory Capacity

Meaning

A specific measure of cognitive function reflecting the system responsible for temporarily holding and manipulating information necessary for complex tasks like reasoning, comprehension, and planning. In the context of hormonal health, capacity is sensitive to fluctuations in key neurosteroids and circulating metabolic substrates. It is a key performance indicator for prefrontal cortex efficiency.