A new method for recovering superposed waveforms when the evoked-response is longer than the interval between stimuli has been recently invented. The new method is called QSD (q-Sequence Deconvolution). QSD can recover brain responses not previously observed because standard evoked-response technique is limited to responses shorter than the period of the stimulus repetition-rate. This project will build a visual stimulator for recording superposed VEPs (Visual Evoked Potentials). The project will then test whether the VEP responds at stimulus repetition-rates, which overlap the VEP. If it does, then the potentials may differ from those seen at slower ? stimulation rates. ? ? The project will also test whether stimuli more complex than checkerboards provide any ? additional measure of brain function. ? ? This project is health related because evoked-responses are widely used for screening and ? diagnostic testing. If the stimulator provides previously-unrecorded VEPs, then it is possible ? that such potentials could be of scientific and clinical use. Because the potentials are obtained ? from scalp electrodes it is easy to utilize such evoked-responses for clinical testing. ? ? ?

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Small Business Innovation Research Grants (SBIR) - Phase I (R43)
Project #
1R43NS048621-01
Application #
6789596
Study Section
Special Emphasis Panel (ZRG1-SSS-S (10))
Program Officer
Babcock, Debra J
Project Start
2004-04-15
Project End
2006-10-15
Budget Start
2004-04-15
Budget End
2006-10-15
Support Year
1
Fiscal Year
2004
Total Cost
$100,971
Indirect Cost
Name
Abratech Corporation
Department
Type
DUNS #
624508917
City
Sausalito
State
CA
Country
United States
Zip Code
94941