Bicoherence at channel O2 plotted over the principal domain in bifrequency space computed using a 128 point window around a point in time 10ms after the presentation of a flash visual stimulus to the right eye.
Bicoherence is computed using a 128 point window which extends in time over the blue region as shown on the 1D plot on top and the window is centred 10ms after the presentation of a flash visual stimulus to the right eye.
Upon the 12-min presentation of a visual distracter (flashing houselight, 0.5 Hz) during task performance, animals initially developed a significant response bias to the left lever in the first 6-min distracter block, reflecting a reduction of attentional effort.
When this crossmodal input happens at the same time as the presentation of a visual flash, it will interact with the ongoing visual processing by lowering the visual threshold and producing a reactivation/enhancement of the visual signal by sound, which is then erroneously interpreted by the brain as a new extra flash presented.
In block 2, neural correlates of photic sneezing were investigated by evoking this reflex by presentation of flashing lights.
The following training phase consisted in pairing the reward with the presentation of a random stimulus (flash of light in one of the five windows), which is removed after 30 s.
A dip in the saccade latency distribution was observed 100 ms after the presentation of a task-irrelevant visual flash, leading the authors to conclude: "Saccadic inhibition may serve to give the brain time to process the arrival of abrupt changes in visual input by delaying the execution of saccades" [28].
For example, for a driver approaching a railway crossing, the presentation of both a red flashing light and a loud bell is likely to allow faster detection, and consequently a faster braking response, than either warning presented alone.
a flashing string of images.
The definitions were followed by a presentation of synonyms: "flash, gleam, glance, glint, sparkle, glitter, scintillate, coruscate, glimmer, shimmer mean to shoot forth light".
