Reaction Time

261.

Simple reaction times in color space: the influence of chromaticity, contrast, and cone opponency.

PURPOSE: This study examined the influence of stimulus chromaticity on simple reaction times (RTs) to determine the stage of chromatic processing that is most influential in their generation. METHODS: Simple RTs were measured in response to the ...
Declan J McKeefry, Neil R A Parry, Ian J Murray (Invest Ophthalmol Vis Sci, 200305)
simple-reaction-times-color-space-influence-chromaticity-contrast.asp

262.

Stopping and restarting an unfolding action at various times.

The ability to inhibit an unfolding action is usually investigated using a stop signal (or gostop) task. The data from the stop-signal task are often described using a horse-race model whose key assumption is that each process (i.e., go, stop) exhibits ...
Tim McGarry, Romeo Chua, Ian M Franks (Q J Exp Psychol A, 200305)
stopping-restarting-unfolding-action-times.asp

263.

Different time courses for visual perception and action priming.

Visual stimuli may remain invisible but nevertheless produce strong and reliable effects on subsequent actions. How well features of a masked prime are perceived depends crucially on its physical parameters and those of the mask. We manipulated the ...
Dirk Vorberg, Uwe Mattler, Armin Heinecke, Thomas Schmidt, Jens Schwarzbach (Proc Natl Acad Sci U S A, 200305)
different-time-courses-visual-perception-action-priming.asp

264.

How choice of mouse may affect response timing in psychological studies.

Mice from the early 1990s seemed to offer a cheap and viable alternative to more expensive response boxes, with fairly consistent results being found between studies. However, has anything changed in the intervening decade? Are newer mice technologies ...
Richard R Plant, Nick Hammond, Tom Whitehouse (Behav Res Methods Instrum Comput, 200305)
choice-mouse-affect-response-timing-psychological-studies.asp

265.

Determining subprocesses of visual feature search with reaction time models.

After the classic serial/parallel dichotomy of visual search mechanisms has been increasingly doubted, we investigated what search mechanisms are used between the two poles termed "pop-out" and "strictly serial search" in an overt feature search ...
Gisela Müller-Plath, Stefan Pollmann (Psychol Res, 200305)
determining-subprocesses-visual-feature-search-reaction-time-models.asp

266.

What is primed in priming from imagery?

Priming from imagery is typically weaker than that from perception. This has been interpreted as resulting from weaker activation of perceptual processes. However, for imagery and perception, commonality is only half the story: Each is also characterized ...
Pascale Michelon, Jeffrey M Zacks (Psychol Res, 200305)
primed-priming-imagery.asp

267.

Optimal screening distance for ulnar neuropathy at the elbow.

Focal demyelinating lesions typically occur within a 1-cm segment of a nerve. In electrodiagnostic studies, measurements over longer distances decrease the chance of detecting such lesions, but measurements over shorter distances result in greater ...
Mark E Landau, Kristen C Barner, William W Campbell (Muscle Nerve, 200305)
optimal-screening-distance-ulnar-neuropathy-elbow.asp

268.

Cerebral activation in abstinent ecstasy (MDMA) users during a working memory task: a functional magnetic resonance imaging (fMRI) study.

The popular recreational drug ecstasy (3,4-methylenedioxymethamphetamine=MDMA and related congeners) is neurotoxic upon central serotonergic systems in animal studies. So far, the most convincing evidence for neurotoxicity-related functional deficits in ...
Jörg Daumann, Bruno Fimm, Klaus Willmes, Armin Thron, Euphrosyne Gouzoulis-Mayfrank (Brain Res Cogn Brain Res, 200305)
cerebral-activation-abstinent-ecstasy-mdma-users-working-memory-task.asp

269.

When does the visual system use viewpoint-invariant representations during recognition?

One popular model of object recognition claims that the visual system typically describes objects using view-specific representations, but that viewpoint-invariant representations are used when objects can be specified uniquely by the arrangement of ...
Kevin D Wilson, Martha J Farah (Brain Res Cogn Brain Res, 200305)
visual-system-viewpoint-invariant-representations-recognition.asp

270.

Reduced processing resource availability in schizotypal personality disorder: evidence from a dual-task CPT study.

Performance on a dual-task information processing task was investigated in 23 schizotypal personality disorder patients (SPD), 29 patients with other noncluster A personality disorders (OPD) and 8 non-psychiatric healthy controls (NC). All participants ...
Patrick J Moriarty, Philip D Harvey, Vivian Mitropoulou, Eric Granholm, Jeremy M Silverman, Larry J Siever (J Clin Exp Neuropsychol, 200305)
reduced-processing-resource-availability-schizotypal-personality.asp