In this way we could measure how the CRF of the cell varied as attention was shifted from the preferred stimulus to the null stimulus.
Initial status (intercept) for all attention outcomes varied significantly by season-specific 25(OH D quartiles (model 1) but the rate of change in attention (slope) showed no effect (models 2 and 3).
Owing to equivocal research results regarding gender and experience differences in attention and perceived exertion reports, this study was designed to examine whether attention allocation varied as a function of perceived effort manipulated by physical workload, and whether gender and experience differences would emerge in regards to attention use.
In a placebo-controlled, double-blind study using a repeated-measures design, we found that the effects of caffeine on visual attention vary as a function of dose and the attention network under examination.
Here, the origins of these cognitive effects were explored using a functional magnetic resonance imaging task that systematically varied demands to shift attention and inhibit irrelevant information across task blocks.
Considering our previous results, together with the present null findings, we argue, as have others, that DS specifically promotes cognitive flexibility, which includes shifting attention, reconciling varied and discrepant influences on decision making, and updating stimulus response mappings.
Because symptoms of Q fever are nonspecific (10 ), its diagnosis is still based on serologic analysis and varies with the attention of the attending physician, true prevalence of the disease, and quality of the diagnostic tests (2 ).
Our most crucial and novel result was that the impact of high versus low right PPC TMS on remote visual cortex varied in a highly attention-dependent manner, when only the top down task demands were changed.
Because attention varies over time, a relatively continuous measure of performance is needed to detect moment-to-moment fluctuations in attention within individuals.
