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A majority of study has suggested that bilinguals are different from monolinguals in their cognitive processing but with the lack of neuro-scientific validation. Moreover the psychological studies have suggested that bilinguals are inherently better at multitasking when compared with the performance of monolinguals owing to the fact that they are used to the act of switching between language conflicts...
Depression is an affective mood disorder characterized by impaired cognitive functioning. This study was designed to elicit and visualize event-related changes during information encoding, maintenance and retrieval processes of working memory in depression. Electroencephalographic signals recorded during performance of 2 memory tasks were used for analysis. The alpha, beta, theta and gamma powers...
Mental Stress is the psychological condition experienced when an individual confronts a situation, where the demands are beyond one's capabilities. Over the years, researchers analysed many relaxation techniques by which stress levels could be reduced. In this work, an attempt has been made to analyse the effect of one of the relaxation stimuli (Alpha music) in the mental task performance. The participants...
Mental stress is a serious problem experienced by college students which often leads to a decline in academic performance, limited social life, alcoholism and drug abuse. Conventional treatments for coping with mental stress hinge on the affected individual's interaction with a psychiatrist/social support group or indulging in relaxing activities. Virtual Reality therapy (VRT) is an upcoming technique...
Attention is the primary cognitive process to induce a response to a stimulus. Maintaining the attentive state continuously for a prolonged period of time is known as sustained attention which is vital for performing any task. The present study aims at evaluating the activation of different brain regions while performing an attention requiring task. A standard attention task called the Visual Continuous...
This report describes the EEG based switching system that uses voluntary eye blinks extracted from EEG signals for activation purpose. Here 2 surface electrodes are placed over the frontal region of the skull and the 3rd one near the auricular region for reference, for the purpose of extraction of EEG wave from the patient. It was found that EEG signal obtained during voluntary eye blink, produces...
Doppler Ultrasound has been widely used in the measurement of blood flow parameters such as blood velocity, blood pressure etc. Success of the automated quantification algorithms for these variables depends on the interference or noise free strength of the signal and position of the base line with respect to zero. Preprocessing and baseline correction techniques suitable for accurate measurement of...
An automated system was developed to control the motor rotation of a wheelchair based on the head movement of a person affected by Quadriplegia. People who are affected by this disease cannot move any of their body parts except their head. In order to facilitate these people for their independent movement, an accelerometer device is fixed on the forehead. Based on the head movement the accelerometer...
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