ABSTRACT
Background: Music is believed to affect the cognitive function. However, there is conflicting evidence about the effect of background music on the same. Few studies have been done on the effect of instrumental music on cognition. Aim and Objective: The aim of our study was to study the effect of low-volume instrumental music on visual reaction time (RT). Materials and Methods: Visual RT (simple reaction time [SRT] and choice reaction time [CRT]) using Deary–Liewald software was recorded in 48 medical students aged 18–21 years, without, and then with low-volume background instrumental flute music. Results were compared with regard to change in mean values of SRT, CRT, and mean central processing time. Data were analyzed statistically using unpaired t-test and statistical significance (P < 0.05) was sought. Results: We did not find any statistically significant change in visual RT after subjecting the students to low-volume background instrumental music. Conclusion: Background instrumental does not significantly affect visual RT but this should be further analyzed.
ABSTRACT
Reaction time is an indirect index of processing capabilities of the central nervous system. The present study was carried out to determine if there is any influence of body mass index on “simple reaction time in healthy young females. In this study, 60 young female participants were allotted to one of the three anthropometric groups based on their body mass index (BMI). Their reaction time to auditory as well as visual stimuli was recorded. Results were expressed as mean, standard deviation and data was analyzed using one – way ANOVA with post-hoc Tukey’s HSD test. Visual as well as auditory reaction time was longer in subjects having higher and lower BMI than normal. Visual reaction time was significantly longer in subjects with lower BMI as compared to that of subjects with normal BMI (P<0.05). Thus body mass index of an individual affects sensory motor association.
ABSTRACT
In. order to evaluate the effects of number and method of visual stimuli on simple reaction time and determine the proper number of trials, simple reaction time of the computerized test of NTOS (Neurobehavioral Test for Occupational Screening) was carried out on 240 medical students. The prominent difference was found between male and female on simple reaction time. Regarding the effect of number based on the parameters of measures and the purpose of test itself, 64 trials was considered as proper number. The mean reaction time was different according to the methods of visual stimuli, such as color and size(p<0.05). The larger and more intence visual stimuli were, the faster sim-ple reaction time was. In respect to sex, that difference was similar. But, there was no difference depending upon whether the each result of each trial was showed on the monitor. The subjects, however, showed much interest when the result showed. Further studies, including the various variables on visual stimuli, are required to compare among various studies.
Subject(s)
Female , Humans , Male , Reaction Time , Students, MedicalABSTRACT
To identify the relation between simple reaction time and height and arm length, simple reaction time was performed to medical students with measurement of height, and arm length. Participants should answer questions about Smoking, drinking, sleep deprivation, history of diseaseand drug, whether to use computer or hot Mean height of men(n=98) was 173.0+/-4.79 cm, that of women (n-22) 161.7+/-4.33 cm. Mean arm length of men was 73.5+/-3.09 cm, and that of women 68.0+/-2.93 cm respectively. Height and arm length were statistically significantly different between-men and women (plt;0.01). Mean simple reaction time of men was 265.4+/-25.03 msec, that of women 286.8+/-28.48 msec. Mean simple reaction time was also statistically significantly different(p<0.01). As a result of correlation analysis, for men. None was significant. However, for women, height and arm length showed statistically significant, correlation with mean reaction time. Correlation coefficient of height and arm length were 0.45 (p<0.05) and 10.57 (p<0.05) respectively.
Subject(s)
Female , Humans , Male , Arm , Drinking , Reaction Time , Sleep Deprivation , Smoke , Smoking , Students, MedicalABSTRACT
In this paper,the behavioral effects on workers in public places of different environmental quality were studied-172 workers of three public places were selected,and the values of environmental quality were determined 1.226,0.948 and 0.876.The results showed that statistically significant differences were found in average reaction time and the fastest reaction time among the three groups,environmental quality being one of risk factors,and that most scores of tests in three groups corresponded to the values of environmental quality and a significant correlation existed between some scores and the values of environmental quality