We first established objective thresholds of the critical temporal parameters for overt and covert presentations of fear and disgust.
Overall, findings demonstrate significant differences between the neural responses to fear and to disgust, and between the covert presentations of these two emotions.
We also designed two counting tasks aimed at dissociating covert attentional field reduction using brief dots presentation versus impaired spatiotemporal integration using unlimited dots presentation and a sequential response mode favoring serial ocular exploration.
For the migratory phase, pathologies in human toxocariasis are due to larva migrans syndromes observed in overt (visceral and ocular) or covert (gut-, lung-, or brain-targeted) presentations [ 9– 13].
With snippets of "leaked" documents, Powerpoint presentations, and internal newsletters from the covert office in hand, the duo set out to knit together a surveillers' perspective of the world.
Where it shined was the story and presentation, actually providing something resembling "modern warfare"—covert, deniable ops around the world and open warfare in the Middle East.
Finding relevant facts that can customize any presentation doesn't require manipulative glances, the covert services of a private investigator, or an army of academic researchers.
In order to study the spatial and temporal dynamics of shifting and re-engaging visual covert selective attention, we designed a cued version of a dual peripheral stream Rapid Serial Visual Presentation (RSVP) task.
Many thanks to Dr Jason Barton for financially supporting the presentation of initial results at the Vision Sciences Society meeting 2007 and to Lu Diao for running covert attention simulations involving gradient lesions.
The fast presentation of the cue (67 ms) and stimuli (40 ms) precludes saccadic eye movement, permitting a measure of exogenous covert attention.
