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Storage limits on our visual hard drive

Researchers René Marois and J. Jay Todd found that the human brain's visual short-term memory has a limited storage capacity of about four objects. This is attributed to the posterior parietal cortex, which plays a key role in holding information from visual scenes.

SourceVanderbilt University·JournalNature·DateApr 14, 2004

Aging brain

Research by University of Michigan cognitive neuroscientist Patricia Reuter-Lorenz found that older adults activate both hemispheres of the brain to perform memory and information processing tasks. This bi-hemispheric processing may help compensate for age-related short-term memory and mental speed declines.

Optimizing Working Memory: Effects Of Dopamine-Like Drug Enhances Short-Term Memory, Up To A Point

Researchers discover that dopamine levels can enhance or impair working memory, with a low dose of the drug bromocriptine improving scores in low-capacity subjects but worsening performance in high-capacity individuals. The study suggests an optimal level of dopamine for short-term memory to function properly.