Microcomputer analysis of three-channel Lissajous' trajectory of auditory brainstem evoked potentials.
A software package for the IBM PC computer is presented to facilitate the analysis of three-channel Lissajous' trajectories (3CLT) of auditory brainstem potentials. The program deals with 4-channel numeric or ASCII files, including three orthogonal X, Y, Z channels and standard vertex-mastoid on the stimulated side. The 3CLT analysis program implements standard measurements of peak latencies, voltage amplitude and curvature plots computed from the three orthogonal channels, interactive three-dimensional rotations of the trajectory and planar segment analysis. Parameter estimates of the best-fit plane are computed for any part of the trajectory limited by two latency cursors. Results are displayed and stored in a table including segment bounds and duration, sight vector orientation, plane equation parameters and adjustment criteria.
Laboratoire de Physiologie générale, UA 290 CNRS, Faculté de Médecine et de Pharmacie, Poitiers, France.
P
P
Ingrand
J
J
Paquereau
F
F
Rousseau
A
A
Marillaud
D005072:Evoked Potentials, Auditory; D006801:Humans; D008838:Microcomputers; D011930:Reaction Time; D012016:Reference Values; D012815:Signal Processing, Computer-Assisted; D012984:Software; D012985:Software Design