Following onset of the motion stimulus, the effects of motion coherence (βcoh, gray curve) and behavioral choice (βchoice, green curve) arise essentially simultaneously given the time resolution of our analysis with a latency of approximately 200 250 msec, as reported previously [22], [49], [51], [52].
Briefly, we used monochrome slides as the visual conditioned stimuli (CS), a loud (97 dB) aversive white noise tone lasting 1000 msec as the US, and the amplitude of the SCR in the 7-sec period following CS presentation as the dependent measure of the conditioning process.
If the average delay in active scanning is 750 msec as in [4] and 1200 msec in passive scanning, the total portion of the scanning delay is 12.5% and 20%, respectively.
The discrimination task is identical to the detection task, except that a distractor tap is delivered on trials in which the target is presented at 1500 msec, as shown in Figure 2D.
The analysis of the EEG data began with an ocular artefact correction by the procedure of multiple source eye correction (MSEC, as implemented in the BESA software, MEGIS Software GmbH, Germany) [42].
In the cell that was used to construct the multicompartment model for the present study, the experimentally obtained value for τm was 25.8 msec as measured in the thick transverse segment over the midline.
Nevertheless, the implications of a critical role of PE, DAG, ERG could also apply to the neuronal system since in that case much faster fusion (msec as opposed to min) is required and it is precisely Ca2+ regulated.
Paired-pulse facilitation in R552H heterozygotes was significantly (p < 0.01) enhanced at short interstimulus intervals (10 75 msec) as compared to that in wild-type littermates, with no detectable differences between genotypes at longer intervals.
Results from psychophysics suggest that it can take as little as 60 msec, or as long as 500 msec, for a stimulus to reach (or produce) experience, depending on the subject, type of stimulus, sensory modality, and the task the subject is attempting to perform.
The following maximum peak components, N1 (20 55 msec), P1 (56 95 msec), N2 (96–145 msec), P2 (146–300 msec), served a priori as dependent variable, as these components have consistently been shown to be related to the processing of stimulus intensity [27], [36] [40].
