Search results
Results from the WOW.Com Content Network
A psychomotor vigilance task (PVT) is a sustained-attention, reaction-timed task that measures the consistency with which subjects respond to a visual stimulus.Research indicates increased sleep debt or sleep deficit correlates with deteriorated alertness, slower problem solving, declined psychomotor skills, and increased rate of false responses.
There are a variety of CPTs, the more commonly used being the Integrated Visual and Auditory CPT (IVA-2), [2] Test of Variables of Attention (T.O.V.A.) and the Conners' CPT-III. [3] These attention tests are often used as part of a battery of tests to understand a person's ' executive functioning ' or their capacity to sort and manage information.
The human processor model uses the cognitive, perceptual, and motor processors along with the visual image, working memory, and long term memory storages. A diagram is shown below. Each processor has a cycle time and each memory has a decay time. These values are also included below.
Choice reaction times (CRTs or RTs) were then recorded and compared between congruent and incongruent conditions. [1] Other variants of the Eriksen Flanker Task have used numbers, [4] color patches, [5] or arrows as stimuli. Also, although most Eriksen Flanker Tasks show the flankers on the left and right of the target, they can also be placed ...
The range of sensory discrimination of a given sense also varies considerably both within and across sensory modality. For example, Kiesow (1903) found in a reaction time task of taste that human subjects are more sensitive to the presence of salt on the tongue than of sugar, reflected in a faster RT by more than 100 ms to salt than to sugar. [20]
This results in decreased reaction times in Posner's spatial cueing task for validly cued targets, [3] and slower reaction times in response to invalidly cued targets: "Detection latencies are reduced when subjects receive a cue that indicates where in the visual field the signal will occur" (Posner, Snyder & Davidson, 1980).
Simon wished to see if an alteration of the spatial relationship, relative to the response keys, affected performance. Age was also a probable factor in reaction time. As predicted, the reaction time of the groups increased based on the relative position of the light stimulus (age was not a factor). The reaction time increased by as much as 30% ...
[14] [15] In 2014, a meta-analysis of twenty studies showed that n-back training has small but significant effect on Gf and improve it on average for an equivalent of 3–4 points of IQ. [16] In January 2015, this meta-analysis was the subject of a critical review due to small-study effects.