It presents compound frequency tracking method that utilizing Phase-Locked Loop (PLL) on accurate frequency tracking and maximum current method on rough frequency tracking.
The experimental results verify the proposed compound frequency tracking method is feasible and effective which eliminates temperature, load changed on the effect of the transducer.
MMN amplitude varied with compound frequency and semantic transparency (the clarity of the relationship between compound and constituent meanings).
When applying this ¾ rule for estimating the K1 frequencies in different samples, we obtain compound frequency of 117/894 (13.1%) for N1a1b, J, and K1 in the three Polish data sets stored in EMPOP (http://www.empop.org) and frequency of 47/277 (17.0%) for I, J, and K1 for the control group in Gaweda-Walerych et al. [ 36].
Evidence that processing Navon stimuli can bias the selection of SFs in a subsequent image has recently been provided by a study that demonstrated that allocating attention to the global or local levels of Navon stimuli facilitates the processing of low SFs or high SFs, respectively, in subsequently presented compound-frequency gratings (Flevaris et al., 2010, in press).
Among the top-ranked 1200 compounds, the frequency of active compounds was 1.5 3 times greater than among randomly ranked compounds (Supplementary Fig. S6).
There was no statistical difference between pseudo-compounds and low frequency compounds and effects at central and parietal locations were not significant.
Following the P3a, there was an increase in negativity around 400 ms, which was larger over frontal locations for transparent compared to opaque compounds, for low- compared to high-frequency compounds, and for pseudo-compounds compared to high frequency compounds.
Amongst the top-ranked 450 compounds, the frequency of activity was 1.5 4 times higher than that of randomly chosen compounds (Supplementary Fig. S8).
Amongst the top 1000 compounds, the frequency of activity was 1.5 3 times higher than that of randomly chosen compounds (Fig. 4B).
