Abstract

Background:- Audiovisual reaction time is time taken by individual to react to auditory and visual stimulus. Body Mass Index influences cognitive functions, attention and memory and hence the reaction time. Objectives:- To find out the Relation between low body mass index (< 18.5 kg/m2) and Audiovisual reaction time and high body mass index (>25 kg/m2) and audiovisual reaction time. Method:- Study was conducted in department of Physiology, Mahatma Gandhi Medical College , Jaipur. 40 subjects of normal Body Mass Index (18-24.99KG/M2) were control, 40 subjects with Body Mass Index (BMI) lower than 18kg/m2 and 40 subjects with Body Mass Index higher than 25kg/m2, were cases. Audio visual reaction times were recorded with the help of audiovisual reaction time apparatus supplied by Medisystem, Yamunanagar. Time taken by subjects to respond to both stimuli was noted in each of the three groups. Result:- In high BMI group, p value for Audio Reaction Time was <0.01 and Visual reaction time, p valve <0.001 .In low BMI group, Audio Reaction Time p valve was <0.001 and for Visual Reaction Time p valve was <0.001. Conclusion:- • Visual reaction time is longer than Audio reaction time in each group, • Audio reaction time and Visual reaction time both were prolonged and statistically significant in groups with high BMI and low BMI in comparison to group with Normal BMI.

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