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Estimate the Cognitive Load Using Electrocardiographic Measure: A Human-AI Collaborative Task

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Published on: December 5, 2025

A subtle threat cue, heart rate variability, and cognitive performance.

Andrew J Elliot¹, Vincent Payen, Jeanick Brisswalter

¹Department of Clinical and Social Sciences in Psychology, University of Rochester, Rochester, New York 14620, USA. andye@psych.rochester.edu

Psychophysiology

|May 14, 2011

Summary

Subtle threat cues, like the color red, can decrease heart rate variability (HRV) and impair cognitive performance. This study shows HRV reflects emotion regulation during achievement tasks.

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Area of Science:

Psychology
Psychophysiology
Cognitive Neuroscience

Background:

Heart rate variability (HRV) is linked to cognitive function.
The influence of subtle threat cues on HRV in performance contexts requires further investigation.

Purpose of the Study:

To examine if a subtle threat cue (red color) affects HRV reactivity.
To determine if HRV reactivity correlates with changes in cognitive performance.

Main Methods:

Participants completed an IQ test, viewed a color cue (red or control), and completed a parallel IQ test.
High-frequency heart rate variability (HF-HRV) was measured before and after color exposure.

Main Results:

Viewing red led to a decrease in HF-HRV compared to control colors.
Reduced HF-HRV was associated with poorer performance on the second IQ test.

Conclusions:

HRV is a sensitive indicator of emotion regulation during achievement-related tasks.
Subtle environmental cues can impact physiological responses and cognitive outcomes.