TY - JOUR
T1 - Forcing function effects on nonlinear trajectories
T2 - Identifying very local brain dynamics
AU - Gregson, Robert A.M.
AU - Leahan, Kerry
PY - 2003/4
Y1 - 2003/4
N2 - Effects of imposing a sinusoidal acoustic and visual forcing function at various frequencies onto an EEG process are examined in terms of various indices of the nonlinear dynamics. Conjoint use of four methods of data analysis; Lyapunov exponents, the entropic analogue of the Schwarzian derivative, surrogate distributions, and higher-order kernel analyses in the time domain, is illustrated. Local epochs with unstable dynamics are identified on very short series.
AB - Effects of imposing a sinusoidal acoustic and visual forcing function at various frequencies onto an EEG process are examined in terms of various indices of the nonlinear dynamics. Conjoint use of four methods of data analysis; Lyapunov exponents, the entropic analogue of the Schwarzian derivative, surrogate distributions, and higher-order kernel analyses in the time domain, is illustrated. Local epochs with unstable dynamics are identified on very short series.
KW - Acoustic
KW - EEG
KW - Nonlinear trajectories
KW - Schwarzian derivative
KW - Visual
UR - http://www.scopus.com/inward/record.url?scp=0042351168&partnerID=8YFLogxK
U2 - 10.1023/A:1021479514992
DO - 10.1023/A:1021479514992
M3 - Article
SN - 1090-0578
VL - 7
SP - 139
EP - 159
JO - Nonlinear Dynamics, Psychology, and Life Sciences
JF - Nonlinear Dynamics, Psychology, and Life Sciences
IS - 2
ER -