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Related Experiment Video

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Quantifying Cognitive Decrements Caused by Cranial Radiotherapy

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Published on: October 18, 2011

Cognitive function during lower body water immersion and post-immersion afterdrop.

Yongsuk Seo¹, Chul-Ho Kim, Edward J Ryan

¹Exercise and Environmental Physiology Laboratory, Kent State University, Kent, OH 44242, USA.

Aviation, Space, and Environmental Medicine

|September 13, 2013

Summary

Cold water immersion impairs cognitive function during the recovery phase, specifically affecting selective attention due to the afterdrop phenomenon and shivering.

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Area of Science:

Environmental Physiology
Cognitive Psychology

Background:

Physiological effects of immersion hypothermia and afterdrop are known.
Psychological effects, particularly on cognitive function, require further investigation.

Purpose of the Study:

To quantify changes in cognitive function during and after lower body water immersion.
To investigate the psychological impact of cold water immersion.

Main Methods:

Nine healthy men underwent neutral and cold water immersion (13°C) to the iliac crest.
Cognitive function was assessed using the Stroop Color Word Test (SCWT).
Physiological parameters including rectal temperature and metabolic rate were monitored.

Main Results:

Cold water immersion reduced rectal temperature but did not affect cognitive function or mood during immersion.
During recovery, an afterdrop in core temperature and shivering occurred.
Selective attention, as measured by SCWT performance and interference, was impaired during recovery from cold immersion compared to neutral immersion.

Conclusions:

Recovery from cold water immersion induces the afterdrop phenomenon and shivering.
These physiological responses during recovery impair selective attention.
The study highlights the psychological consequences of cold water immersion.