Functional neuroimaging of short-term memory: The neural mechanisms of mental storage

Bart Rypma, John D E Gabrieli

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Cowan argues that the true short-term memory (STM) capacity limit is about 4 items. Functional neuroimaging data converge with this conclusion, indicating distinct neural activity patterns depending on whether or not memory task-demands exceed this limit. STM for verbal information within that capacity invokes focal prefrontal cortical activation that increases with memory load. STM for verbal information exceeding that capacity invokes widespread prefrontal activation in regions associated with executive and attentional processes that may mediate chunking processes to accommodate STM capacity limits.

Original languageEnglish (US)
Pages (from-to)143-144
Number of pages2
JournalBehavioral and Brain Sciences
Volume24
Issue number1
DOIs
StatePublished - Aug 20 2001

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Physiology
  • Behavioral Neuroscience

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