Background and aim: Different brain waves are produced during cognitive activities and at rest. The alpha waves with frequency of 8-13 Hz, 40 – 100 µV amplitude is recorded during wakeful relaxation with eyes closed. Beta waves with frequency of 13 – 30 Hz, 2 - 20µV amplitude are recorded during busy or anxious thinking and active concentration. IQ test, a form of cognitive task requires active concentration and hence beta wave generation on EEG. Present study is designed to study the pattern of ? and ? waves in different IQ groups and changes in brain wave activity with IQ testing. Material and method: In the present ongoing study on 50 subjects, EEG recording is done in two phases. In the first phase, basal EEG recording is done. In the second phase, IQ testing is done while recording EEG. Subjects are divided into IQ groups depending on IQ scores. Statistical analysis: EEG changes will be reported using Wilcoxon sign rank test and paired t test. Result: The data analysed on the current number of subjects exhibited left sided dominant ? rhythm activity as marked by high amplitude in all IQ groups. The ? rhythm amplitude was left dominant in lower IQ ranges.

Dr. Mohita Singh has completed her MBBS, MD Physiology degree from GMC Jammu. She is presently working as Lecturer physiology at GMC Jammu. She has various international and national paper presentations and publications in field of neurophysiology. She is life time member of various associations in physiology and is serving as editorial board member of reputed journal. In addition, she is national player in table tennis and has many medals under her name.