Table 1.
A summary of research on attentional modulation of ASSR using the frequency tagging paradigm.
Figure 1.
A depiction of the trial sequence.
Table 2.
Mean reaction times for targets across modulation frequencies for the congruent and incongruent condition. Standard deviations are given in parentheses.
Figure 2.
The grand mean FFTs for 16 and 23.5 Hz modulation frequencies during attended and unattended conditions across ipsilateral and contralateral activations combined from the two electrodes (T7 & T8).
The power in the FFTs is an absolute value expressed in terms of squared microvolts per every 1 Hz of frequency (µV2/Hz). The first harmonics for both 16 and 23.5 Hz are also shown.
Figure 3.
The grand mean FFTs for 32.5 and 40 Hz modulation frequencies during attended and unattended conditions across ipsilateral and contralateral activations combined from the two electrodes (T7 & T8).
The power in the FFTs is an absolute value expressed in terms of squared microvolts per every 1 Hz of frequency (µV2/Hz).
Figure 4.
The bar graphs represent the absolute power measured from FFTs, when white noise was modulated with a particular modulation frequency and was attended or unattended.
The bars represent neural activity from the ipsilateral and contralateral activations combined from T7 and T8 sites. An asterisk above the bar graphs indicates significant differences at p<.05.