They have their own organic logic, and tend to resolve into simple, sustained intervals.
During sustained touch, SAI afferents produce a biphasic spike train characterized by high-frequency firing during stimulus onset (ramp phase) and low-frequency firing with a highly variable interspike interval (ISI) during sustained displacement (static phase).
Post hoc comparisons revealed that the increases for position and odor-position information were sustained during both intervals after the odor onset, while information for odors increased only at the end of the poke (Tukey's Honest Significant Difference test, p<0.05).
Importantly, the figure shows that the interval of sustained polarity is smaller than the interval of regions II IV.
Rather than divide our attention, it is far more effective to take frequent breaks between intervals of sustained, one-pointed attention.
We therefore can only speculate, extrapolating from observations in our study, that β oscillations induced by verbal stimuli, if verbal stimuli had been tested, might also have been sustained during the retention interval, as were those elicited by abstract shapes.
Similarly, empiric antibiotics were more likely to be compliant with ATS/IDSA guidelines during post-implementation (79/257 (30.7%) vs 66/151 (43.7%); P = 0.01), an effect that was sustained over quarterly intervals (P = 0.0008).
Evidence from ephemeral lake deposits and landforms indicates times of sustained stream flow during a wet interval of the latter part of the Medieval Warm Period at ca. AD 1290 and during the Little Ice Age at ca. AD 1650.
The telegraph process gives rise to periods of sustained, rapid activity followed by intervals of inactivity.
To investigate the neural substrate for WM, previous studies have shown that distributed brain regions exhibit sustained activity during the retention interval of delayed-response tasks Goldman-Rakicc, 1987; Wager & Smith, 2003).
Thus, any discriminating gene-expression signature had to be sustained over this time interval.
