Critical Flicker Fusion Frequency and Visual Reaction Time in Six Different Colors in Students with Different Grade of the Perceived Stress
Keywords:Color visual reaction time, Critical flicker fusion frequency, Moderate stress.
Perceived stress is the thoughts or feelings one has about their level of experienced stress. The
onset of fatigue and perceived stress could be detrimental to the cognitive functioning and ability.
Visual reaction time indicates the sensory motor coordination and critical flicker fusion frequency
indicates detrimental to the cognitive functioning and ability. In this study the levels of perceived
stress and their effect on visual reaction time and critical fusion frequency is measured.
Methods: A total of 75 apparently healthy students in the age group of 18-40 years students were
included in the study. The perceived stress scores were measured using the questionnaire and
participants were divided into mild (group I) and moderate stress group (group II). The visual
reaction time recording was done using different color like red, green, blue, yellow, purple and
aqua. Critical flicker fusion frequency was also measured.
Results: The average visual reaction time for red, green and blue was less when compared to
purple, yellow and aqua. The mean reaction time for red color in mild stress group I (392 ± 44
msec) was more when compared to group II (379 ± 40 msec). similar findings were found in
all other colors except purple were mean reaction time same in both the group. There was no
difference in the CFFF between the groups.
Conclusion: It found that sensory coordination in the mild stress group was diminished when
compared to participants in moderate stress group. There are no changes in cognitive ability (CFFF) between the groups.
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