Analysis of MEG relating to subjective preference of visual motion stimuli

The aim of this study is to identify the relationship between subjective preference and the human brain responses to visual motion under changing period. First, preference judgments using the paired-comparison method for sinusoidal movements of a single circular target in the horizontal direction were performed. Then, MEG data were recorded during presentations of the most preferred and the least preferred moving stimuli. From the initial delay range of the autocorrelation function (ACF) of the alpha wave, the effective duration (τ_e) was analyzed. Results show that the stimulus with most preferred periods has a greater value of τ_e than that with least preferred periods at the occipital area, especially in the left hemisphere.