TY - JOUR
T1 - Time production and EEG alpha revisited
AU - Glicksohn, J.
AU - Berkovich-Ohana, A.
AU - Balaban-Dotan, T.
AU - Goldstein, A.
AU - Donchin, O.
PY - 2009
Y1 - 2009
N2 - If one accepts the notion of an internal clock, then one must further presume
that time production is attuned with the rate of functioning of the clock's
pacemaker. We look at the individual's online EEG recording while performing a
time-production task, placing one focus of interest on the individual's peak alpha
frequency (PAF), and a second on alpha power and its topography. The
participants completed a time-production task with online EEG recording, twice
during a single session in the lab, in a pre-post design. We present data
concerned with the topography of post-pre differences in alpha power, both
during time production and during rest, as a function of an intervening period of
either restful wakefulness or motor activity. Our major finding is that left PAF and
right PAF mutually suppress each other in predicting produced duration, and that
given the size and sign of their regression weights, it is a left-right asymmetry in
PAF that plays a pivotal role here. On computing a left-right asymmetry index for
PAF, we found that this index had a significant correlation with the mean logtransformed
produced duration (r = .364, p < .01), and that the relationship is
stronger among females (r = .500, p < .005).
AB - If one accepts the notion of an internal clock, then one must further presume
that time production is attuned with the rate of functioning of the clock's
pacemaker. We look at the individual's online EEG recording while performing a
time-production task, placing one focus of interest on the individual's peak alpha
frequency (PAF), and a second on alpha power and its topography. The
participants completed a time-production task with online EEG recording, twice
during a single session in the lab, in a pre-post design. We present data
concerned with the topography of post-pre differences in alpha power, both
during time production and during rest, as a function of an intervening period of
either restful wakefulness or motor activity. Our major finding is that left PAF and
right PAF mutually suppress each other in predicting produced duration, and that
given the size and sign of their regression weights, it is a left-right asymmetry in
PAF that plays a pivotal role here. On computing a left-right asymmetry index for
PAF, we found that this index had a significant correlation with the mean logtransformed
produced duration (r = .364, p < .01), and that the relationship is
stronger among females (r = .500, p < .005).
UR - http://neuroquantology.com/index.php/journal/article/view/215/215
M3 - Article
SN - 1303-5150
VL - 7
SP - 138
EP - 151
JO - NeuroQuantology
JF - NeuroQuantology
ER -