Abstract. The experiment examined the effects 4 weeks of vitamin D (Vit D) supplementation versus placebo on musculoskeletal and psychomotor performance. Thirty-two college age males (Age: 22 ± 4 y, Height: 177.7 ± 8.3 cm, Weight: ...
Negative Antwortverzerrungen werden quantitativ mit expliziten Beschwerdenvalidierungstests oder mit eingebetteten Parametern untersucht. Es wird die Kriteriumsvalidität der Standardabweichung von Reaktionszeiten als eingebetteter Parameter zur ...
Information processing speed – old hat or relevant construct? A conceptual reviewAbstract. The concept of information processing speed is one of the oldest research topics in experimental psychology. Tests for ...
Lack of sleep, benzodiazepines and reaction performanceAbstract. Common wisdom holds that measures of attention are affected by both acute use of benzodiazepines and by lack of sleep. The published data is, however,...
Intersensory Facilitation: Visual accessory signals can also shorten reaction timeAbstract. Subjects respond faster to a visual response signal when an auditory accessory is presented at the same time. In contrast, a visual accessory does not reduce ...
AbstractSmoking/nicotine improves cognitive performance for a variety of tasks. In most cases, reaction time (RT) is generally shorter after smoking/nicotine. While there may be some slight facilitation of stimulus-evaluation processing, most of the RT ...
AbstractBackground: Depressed subjects and euthymic controls demonstrate differences in cognitive processing and brain electrophysiology. Contingent negative variation (CNV) and postimperative negative variation (PINV) was used to investigate the ...
Abstract The effect that the difficulty of the discrimination between task-relevant and task-irrelevant stimuli has on the relationship between skin conductance orienting and secondary task reaction time (RT) was examined. Participants (N = 72) counted ...
Abstract Several studies have shown faster choice-reaction times to positive than to negative facial expressions. The present study examined whether this effect is exclusively due to faster cognitive processing of positive stimuli (i.e., processes leading ...
Abstract The effects of attention to a lead stimulus and of its sensory properties on modulation of the acoustic blink reflex were investigated. Participants performed a reaction time task cued by an acoustic or a visual lead stimulus. In Experiment 1, ...
Abstract: Existing evidence suggests that baroreceptor stimulation may impair sensorimotor functioning. The purpose of this study was to determine whether the adverse effect of baroreceptor stimulation on sensorimotor functioning is more pronounced among ...
Everyday activities require different levels of mental load depending on both external and internal task demands, and the resulting strain is likely to drastically influence the forthcoming performance. In this study, we aimed to determine how objective ...
Recent research suggests that individual differences in brain dopamine (DA) functioning may be related to the personality dimension of extraversion. The present study was designed to further elucidate the biological mechanisms underlying behavioral ...
Effects of four retest-practice sessions separated by 2 h intervals on the relationship between general intelligence and four reaction time tasks (two memory tests: Sternberg's memory scanning, Posner's letter comparison; and two attention tests: ...
Abstract. Participants switched between two randomly ordered discrimination tasks and each trial began with the presentation of a task cue instructing which task to execute. The authors induced phasic alertness by presenting a salient uninformative ...
The Deese/Roediger-McDermott (DRM; Roediger & McDermott, 1995) paradigm reliably elicits false memories for critical nonpresented words in recognition tasks. The present studies used a Sternberg (1966) task with DRM lists to determine whether false ...
In task switching experiments, comparing performance with bivalent stimuli (affording both tasks) to univalent stimuli (affording one task) confounds the need to change focus between dimensions and stimulus-task binding, because bivalent stimuli require ...
Abstract. Reaction time (RT) of erroneous responses in go/no-go tasks tends to be shorter than RT of correct responses. An opposite difference has been reported (Halperin, Wolf, Greenblatt, & Young, 1991) which could be attributed to ...
Abstract. The intriguing interplay between acute stress physiology and cognitive processes has long been noted. However, while stress-induced release of glucocorticoids has repeatedly been shown to impact brain ...