TARGETED TRANSCRANIAL ELECTROTHERAPY SYSTEM TO ACCELERATE STROKE RECOVERY

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: 1R41NS076123-01
Agency Tracking Number: R41NS076123
Amount: $530,701.00
Phase: Phase I
Program: STTR
Awards Year: 2011
Solitcitation Year: 2011
Solitcitation Topic Code: NINDS
Solitcitation Number: PA10-051
Small Business Information
SOTERIX MEDICAL,INC.
160 CONVENT AVENUE,ROOM ST 142, NEW YORK, NY, -
Duns: 965459519
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 LUCAS PARRA
 (212) 650-7211
 parra@ccny.cuny.edu
Business Contact
 LUCAS PARRA
Phone: (626) 864-9390
Email: lparra@soterixmedical.com
Research Institution
 THE CITY COLLEGE OF NEW YORK
 CITY COLLEGE OF NEW YORK
160 Convent Avenue
NEW YORK, NY, 10031-9109
 () -
 Nonprofit college or university
Abstract
DESCRIPTION (provided by applicant): Transcranial Direct Current Stimulation (tDCS) with weak currents is a non-invasive, low-cost, and well tolerated technique producing lasting functional changes in the central nervous system. There is increasing evidence supporting the use of tDCS to improve stroke rehabilitation. Behavioral and therapeutic outcomes of tDCS depend on the brain areas being targeted. However, conventional approaches are limited in that they insufficiently activate the target region and/or result in unspecific stimulation throughout the entire head. To address this, High-Definition tDCS (HD-tDCS) using arrays of specifically designed electrodes has been proposed. The high-definition approach results in more focal and targeted stimulationas compared to conventional electrode montages. It allows for exceptional flexibility in designing targeted and individualized electrotherapy. When focusing on peri-lesional areas the multi-electrode high-definition approach is predicted to achieve not only more focal stimulation but importantly, also increased intensity in the peri-lesional areas with the same total currents applied to the electrodes. Thus, the high-definition approach holds promise to achieving not only safer but also stronger activationof rehabilitation targets and thus more effective rehabilitation outcomes. This project will design, prototype, and validate the first electrotherapy system optimized for stroke rehabilitation, Rehabilitation HD-tDCS (rHD-tDCS); moreover this system isthe first to apply advanced software algorithms and existing HD-tDCS technology to leverage the presence of the lesion to guide current to precise targets in an individually optimized fashion. The main goal of this project is the focal and reliable stimulation of peri-lesional cortical targets to improve stroke rehabilitation. The efficacy of the technique will be demonstrated on improved language training in stroke patients with aphasia. Milestones for a successful Phase-1 are: 1. Automated modeling and optimization of current flows in accurate anatomical models of stroke lesions and surrounding areas. 2. Prototype of a programmable stimulation device and electrode montage optimized for targeting these stroke areas. 3. Successful rehabilitation treatment ofaphasia with the rHD-tDCS device. The stimulation device and protocols developed in this project are further applicable to motor rehabilitation in stroke and other promising areas of targeted electro-therapy. PUBLIC HEALTH RELEVANCE: Electricalstimulation with small currents trough the scalp produce significant improvements in rehabilitation training, in particular the recovery of language skills after a stroke. This projects aims to developed advanced technology called Rehabilitation High-Definition transcranial Direct Current Stimulation (rHD-tDCS) which can guide therapeutic electrical currents trough multiple electrodes to brain regions involved in functional recovery while sparing the rest of the brain. This is expected to improve safety, reliability, and efficacy of stroke rehabilitation training.

* information listed above is at the time of submission.

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