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Related Experiment Videos

Superior episodic memory in inconsistent-handers: a replication and extension using fNIRS.

Ruth E Propper1, Neil Patel1, Stephen D Christman2

  • 1a Department of Psychology , Montclair State University , Montclair , NJ , USA.

Memory (Hove, England)
|April 1, 2017
PubMed
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Inconsistent-handed individuals show superior memory recall. This study found brain activity differences, with right-hemisphere activity linked to better recall only in consistent-handers during memory tasks.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Human Brain Imaging

Background:

  • Evidence shows inconsistent-handers have superior episodic memory retrieval compared to consistent-handers.
  • Neuroanatomical and neurophysiological differences exist between consistent- and inconsistent-handers.
  • No prior studies have investigated brain activity during memory tasks in relation to handedness.

Purpose of the Study:

  • To investigate frontal lobe activity differences between inconsistent- and consistent-handers during memory encoding and recall.
  • To be the first study to examine physiological brain activity in relation to handedness and episodic memory retrieval.

Main Methods:

  • Functional near-infrared spectroscopy (fNIRS) was used to measure frontal lobe activity.
  • Participants encoded and recalled lists of words.
Keywords:
Handednessepisodic memoryfNIRSrecall

Related Experiment Videos

  • Oxygenated hemoglobin (O2Hb) levels were analyzed as a measure of brain activity.

    • Main Results:

    • Replicated previous findings of superior episodic memory recall in inconsistent-handers.
    • Identified the first evidence of handedness-related differences in brain activity during memory retrieval.
    • Found that increased right-hemisphere O2Hb during recall correlated with better memory performance, but only in consistent-handers.

    Conclusions:

    • Handedness influences brain activity patterns during episodic memory retrieval.
    • The relationship between right-hemisphere activity and memory recall differs between consistent- and inconsistent-handers.
    • fNIRS provides a valuable tool for exploring brain activity differences related to cognitive functions and individual variations like handedness.