A5044064329- EEG and Brain-Computer Interfaces
- Neuroscience and Neural Engineering
- Muscle activation and electromyography studies
- Advanced Memory and Neural Computing
- Stroke Rehabilitation and Recovery
- Non-Invasive Vital Sign Monitoring
- Gaze Tracking and Assistive Technology
- Cerebral Palsy and Movement Disorders
- ECG Monitoring and Analysis
- Retinal Imaging and Analysis
- Heart Rate Variability and Autonomic Control
- Hemodynamic Monitoring and Therapy
- AI in cancer detection
- Optical Coherence Tomography Applications
- Photoreceptor and optogenetics research
- Botulinum Toxin and Related Neurological Disorders
- Blind Source Separation Techniques
- Neural dynamics and brain function
- Tactile and Sensory Interactions
- Digital Holography and Microscopy
- Digital Imaging for Blood Diseases
- Image Retrieval and Classification Techniques
- Brain Tumor Detection and Classification
- Functional Brain Connectivity Studies
- Emotion and Mood Recognition
Indian Institute of Technology Kharagpur
2015-2024
Indian Institute of Technology Delhi
2018
University of Southern California
2002-2013
Ali Yavar Jung National Institute for the Hearing Handicapped
2011
Doheny Eye Institute
2003-2008
Retina Institute
2003-2007
University of Kentucky
2005-2007
Second Sight Medical Products
2003
Southern California University for Professional Studies
2003
Indian Institute of Technology Madras
1993-1996
This paper proposes a novel modification of the brightness preserving dynamic histogram equalization technique to improve its and contrast enhancement abilities while reducing computational complexity. The modified technique, called Brightness Preserving Dynamic Fuzzy Histogram Equalization (BPDFHE), uses fuzzy statistics digital images for their representation processing. Representation processing in domain enables handle inexactness gray level values better way, resulting improved...
The goal was to evaluate how perceptual thresholds are related electrode impedance, size, the distance of electrodes from retinal surface, and thickness in six subjects blind as a result retinitis pigmentosa, who received epiretinal prostheses implanted monocularly part U.S. Food Drug Administration (FDA)-approved clinical trial.The implant consisted an extraocular unit containing electronics for wireless data, power recovery, generation stimulus current, intraocular 16 platinum stimulating...
Three test subjects blind from retinitis pigmentosa were implanted with retinal prostheses as part of a FDA-approved clinical trial. The implant consisted an extraocular unit that contained electronics for wireless data, power, and generation stimulus current, intraocular 16 platinum stimulating electrodes arranged in 4 /spl times/ pattern within silicone rubber substrate. array was held to the retina by small tack. stimulator connected multiwire cable controlled computer based external...
To evaluate the therapeutic effects of Functional Electrical Stimulation (FES) tibialis anterior muscle on plantarflexor spasticity, dorsiflexor strength, voluntary ankle dorsiflexion, and lower extremity motor recovery with stroke survivors.We conducted a prospective interventional study.Rehabilitation ward, physiotherapy unit gait analysis laboratory.Fifty-one patients foot drop resulting from stroke.The functional electrical stimulation group (n=27) received 20-30 minutes to peroneal...
This paper proposes a new electronic mobility cane (EMC) for providing obstacle detection and way-finding assistance to the visually impaired people. The main feature of this is that it constructs logical map surrounding environment deduce priority information. It provides simplified representation without causing any information overload. conveys subject by using intuitive vibration, audio or voice feedback. other novel features EMC are staircase nonformal distance scaling scheme. also...
Purpose. To evaluate the clinical efficacy of functional electrical stimulation (FES) therapy tibialis anterior (TA) muscle on gait restoration and enhancing motor recovery with stroke patients.
This paper presents an electronic navigation system for visually impaired and blind people (subject). understands obstacles around the subject up to 500 cm in front, left right direction using a network of ultrasonic sensors. It effectively calculates distance detected object from prepares path accordingly avoiding obstacles. uses speech feedback aware about obstacle its distance. proposed AT89S52 microcontroller based embedded process real time data collected sensor network. Based on...
An epiretinal prosthesis, consisting of an extraocular microelectronic stimulator and intraocular electrode array, was implanted in one eye three blind sighted dogs. Three dogs (2 blind, 1 normal) were stimulated for 120 days, two (both 60 103 days respectively 8–10 h/day at levels 0.1 mC cm−2 0.05 cm−2, with each stimulus level presented to half the array. One dog kept as inactive implant control. During study period, electroretinograms (ERG) fundus photographs recorded. At end sacrificed...
Brain- Computer Interface (BCI) is used to control a system through which people with motor disabilities could achieve better quality of life by improving their interaction ability the surrounding environment. Using BCI, patients suffering from severe can also variety applications generating commands using own EEG signals. There are many assistive devices available reduce personal, social, and economic burdens improve independence but these individuals do not have normal neuromuscular...
This paper considers two dimensional valence-arousal model. Pictorial stimuli of International Affective Picture Systems were chosen for emotion elicitation. Physiological signals like, Galvanic Skin Response, Heart Rate, Respiration Rate and Temperature measured accessing emotional responses. The experimental procedure uses non-invasive sensors signal collection. A group healthy volunteers was shown four types categorized as High Valence Arousal, Low Arousal around thirty minutes Linear...
Fine needle aspiration cytology is commonly used for diagnosis of breast cancer, with traditional practice being based on the subjective visual assessment cytopathology cell samples under a microscope to evaluate state various cytological features. Therefore, there are many challenges in maintaining consistency and reproducibility findings. However, digital imaging computational aid can improve diagnostic accuracy reduce effective workload pathologists. This paper presents deep convolutional...
The main objective of this work was to evaluate and compare the effects Functional Electrical Stimulation (FES) therapy in walking ability muscle strength studied by electromyography (EMG) analysis between subacute chronic stroke patients. Eighteen consecutive hemiplegic patients suffering from foot drop were assigned either or group. Patients both groups' treated according conventional rehabilitation program combined with FES for 12 weeks. At post-treatment, subjects showed a mean increase...
Purpose: To evaluate the clinical feasibility and effect of neuromuscular electrical stimulation (NMES) therapy quadriceps femoris (QF) tibialis anterior (TA) muscles on improving gait functional outcomes in children with spastic cerebral palsy (CP). Method: Ten diplegic/hemiplegic CP who were age group 7 to 14 years recruited from a rehabilitation institute randomly assigned either control or NMES group. Both groups obtained conventional physiotherapy muscle strengthening exercises. The...
Wireless body area networks (WBANs) can help in enabling efficient patient monitoring solution for ubiquitous healthcare. Communication WBANs is undertaken two phases: intra-WBAN and extra-WBAN. The prevailing use cellular network or WiFi the extra-WBAN phase involving communication between on-body coordinator access points (APs) connected to medical server through internet. applications of have stringent requirements low end-to-end delay high packet delivery ratio. authors evaluate...
Clinicians refer to standard physiological signals (ECG and PPG) diagnose conduction disorders coronary arterial malfunctions. The exact disease is identified from the results of confirmatory medical tests. This procedure creates a time lag in treating patients causes difficulty attending emergency cases. In this study, novel method proposed detect classify diseases related electrical impulses arteries other cardiac abnormalities efficiently. ECG PPG are collected simultaneously 300...