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Related Concept Videos

Working Memory01:24

Working Memory

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Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
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The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
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Updated: Feb 22, 2026

Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment
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Working Memory Capacity and Surgical Performance While Exposed to Mild Hypoxic Hypoxemia.

Paul J Parker, Andrew J Manley, Ross Shand

    Aerospace Medicine and Human Performance
    |September 20, 2017
    PubMed
    Summary

    Mild hypoxia from high altitudes did not affect surgeons' memory but impaired orthopedic surgical skill performance. Supplemental oxygen may not be needed for short-term, unacclimated exposure to 3000m altitude.

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    Area of Science:

    • Aerospace Medicine
    • Orthopedic Surgery
    • Human Physiology

    Background:

    • Medical Emergency Response Team (MERT) helicopters operate at high altitudes (3000m).
    • Civilian surgical teams may face similar conditions, potentially impacting performance due to mild hypoxia.
    • Understanding the effects of acute hypoxia on surgical skills is crucial for aeromedical teams.

    Purpose of the Study:

    • To investigate the impact of acute normobaric hypoxia (equivalent to 3000m) on orthopedic surgeons' cognitive and practical performance.
    • To determine if supplementary oxygen is necessary for surgical teams operating at high altitudes.

    Main Methods:

    • Ten UK orthopedic surgeons were exposed to normobaric hypoxia (FIo2 ~14.1%) or normoxia for 45 minutes in a double-blind, randomized protocol.
    • Cognitive function was assessed using verbal working memory capacity (VWMC) tests.
    • Surgical skill was evaluated by applying an orthopedic external fixator to a plastic tibia.

    Main Results:

    • Hypoxia significantly reduced oxygen saturation (SpO2 87% vs. 98%) but did not affect verbal working memory capacity.
    • Surgical performance showed a significant increase in pin-divergence score (frame asymmetry) under hypoxic conditions (4.6 mm vs. 3.0 mm).
    • One fixation device applied in hypoxic conditions would have potentially failed early.

    Conclusions:

    • Acute exposure to 3000m altitude hypoxia for 45 minutes may not impair cognitive function in unacclimated surgeons.
    • Surgical performance, specifically frame stability, can be negatively affected by mild hypoxia.
    • Further research is needed, but current findings suggest surgery at 3000m may be feasible without supplemental oxygen for short durations.