Change from pre-stimulation power values did not differ between stimulation and sham conditions in the fifth PSI for any power bands (all t(5) < 2.296, P > 0.07, two-tailed), though theta and alpha bands yielded marginally lower values for the stimulation condition (both P < 0.095).
With monopolar stimulation, alpha power was taken as the mean power recorded from the two flanking bipolar pairs.
These theoretical relationships were validated in another series of experiments where the stimulation laser power remained within a very limited range (16 20 mW) over a wide range of ambient temperatures (Fig. 8A' & 8B').
Also, under conditions of relatively constant stimulation, baseline power measures may not relate directly to spontaneous gamma-band.
For example, during somatosensory stimulation, the power law exponents for the oscillations of 10- and 20-Hz decrease in comparison to the oscillations of ongoing activity (Linkenkaer-Hansen et al. 2004).
It is likely that during our high-power (global) stimulation, we stimulated more than just the somatosensory sector of TRN, as light is expected to spread in this case and reach other sectors.
In case of the ramp stimulation protocol, light power changed from 0 to 100 mW/mm2.
Across seven patients, odor stimulation enhanced theta power in human piriform cortex, with robust effects at the level of single trials.
Traits or values regarding self-direction, stimulation, achievement and power are clearly expected to be positively related to entrepreneurial attitudes, while those related to universalism, conformity, security and tradition, may be negatively related.
So why do we get so excited about weather like this? "Snowstorms have that rare mixture of stimulation, fear, and power, yet beauty," explains clinical psychologist John Mayer, Ph.D. "Natural phenomena such as this also have the element of being affected by something out of our control and this stimulates us in a unique way psychologically".
