Key result
Cardiac cycle phase and heart rate changes showed no significant or consistent relationship with reaction time response latencies.
Why the study?
Does the phase of the cardiac cycle or heart rate change affect reaction time in subjects?
Does the phase of the cardiac cycle or heart rate change affect reaction time in subjects?
The study suggests that the relationship between cardiac cycle phase or heart rate changes and reaction time, as proposed by Lacey's hypothesis, is weak or inconsistent.
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No support for cardiac-cycle timing of stimuli; leaves open whether heart-rate effects exist in other cognitive or clinical contexts.
Salzman et al. (1976) studied this question. Cardiac cycle phase and heart rate changes vs. Different phases or epochs was evaluated on Reaction time (response latencies). Cardiac cycle phase and heart rate changes showed no significant or consistent relationship with reaction time response latencies.
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