Basis functions for sinusoidal evoked potentials: A waveform analysis program on a small computer

✍ Scribed by T.Joe Willey; Earl Kellner

• Publisher: Elsevier Science
• Year: 1973
• Weight: 425 KB
• Volume: 3
• Category: Article
• ISSN: 0010-468X
• DOI: 10.1016/0010-468x(73)90020-2

✦ Synopsis

A computer program for the PDP-12 is described that reduces a series of discrete time points representing an evoked potential to a set of fundamental waveform specifications in amplitude, latency, duration, etc., for principal potential deflections or waves. To derive a basis function the program assumes the evoked potential is sinusoidal and estimates coefficients to the elementary waveform:

Data is read from LINC tape as single or double precision points, smoothed and displayed with a cursor, baseline, and cursor reference location. The program locates the zero-crossover and amplitude points in either an automatic mode or by operator interaction from the console keyboard. Advantages of the program over visual waveform analysis include: Rapid reduction of the complex waveform to a few characteristic parameters, convenience and numeric output for statistics and curve fitting. The program has general usefulness to data processing in the neurosciences.

Small computer

Neurophysiology Basis functions Evoked potential PDP-12 Computer-assisted waveform analysis