Implementation of a Method to Detect the Single Visual Evoked Response.
Abstract
The visually evoked response (VER) is one neural response to an external event. Although, with computer averaging techniques the evoked response to a particular stimulus is readily available, there are anticipated applications which require detection of the VER after a single stimulus presentation. The approach in this report is based on the similarity of the problem to that of radar detection in which a known signal is buried in noise. Using discrete Fourier transform and other digital signal processing techniques, a filter matched to the VER template was computed and implemented on a digital computer. Computation of the matched filter required an estimate of the noise power spectrum, where the noise in this case is the on-going electrical activity of the brain. Results indicate that the matched filter will detect the single evoked response. However, the false alarm rate is high.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1977
- Accession Number
- ADA039756
Entities
People
- Charles E. Macomber
Organizations
- Air Force Institute of Technology