Impact of signal-to-noise on functional MRI. Discrepancies between existing genital and subjective measures indicate that some women may report substantial subjective arousal without substantial genital arousal, and vice versa. When viewing female compared with male erotic videos Fig. Popular Bisexual Sex Pics. Participants whose picture data SNR was less than one standard deviation below the mean were excluded from picture analyses. Distinguishing specific sexual and general emotional effects in fMRI-subcortical and cortical arousal during erotic picture viewing.
The second question was whether bisexual women differed from heterosexual women in their Male-Female contrasts.
Neural Correlates of Sexual Orientation in Heterosexual, Bisexual, and Homosexual Women
We focused on the ventral striatum, an area of the brain associated with desire, extending previous findings from the sexual psychophysiology literature in which homosexual women had greater category specificity relative to heterosexual and bisexual women in their responses to male and female erotic stimuli. Brain activity during visual versus kinesthetic imagery: Club Bisexual is probably the web's most comprehensive collection of bisexual porn. To exclude participants with poor signal due to either head motion or scanner conditions, average signal-to-noise ratio SNR over time was calculated for each subject after preprocessing, using a mask that included only voxels with appreciable EPI signal. Introduction Studies using physiological measures have found that women tend to have non-specific patterns of genital arousal 1 — 3. Bailey JM, et al.