Reaction Time

471.

Optimal distance for segmental nerve conduction studies revisited.

In 1972, Maynard and Stolov showed that the experimental error in calculating nerve conduction velocity (NCV) depends on errors of latency and distance measurements. Their data suggested that a minimum distance of 10 cm should be used when calculating ...
Mark E Landau, Myrna I Diaz, Kristen C Barner, William W Campbell (Muscle Nerve, 200303)
optimal-distance-segmental-nerve-conduction-studies-revisited.asp

472.

Covert and overt orienting to gaze direction cues and the effects of fixation offset.

We examined covert and overt orienting in response to non-predictive gaze direction cues and investigated whether the subcortical superior colliculus (SC) plays a role in this type of orienting. Participants viewed a centrally presented gazing schematic ...
Chris Kelland Friesen, Alan Kingstone (Neuroreport, 200303)
covert-overt-orienting-gaze-direction-cues-effects-fixation-offset.asp

473.

Event-related potential evidence for attentional inhibition of return in audition.

Orienting attention to a spatial location facilitates responding to a subsequent target at that location, but inhibits the response if attention is oriented away from that location before the target appears there. This inhibitory effect of attention ...
David J Prime, Matthew S Tata, Lawrence M Ward (Neuroreport, 200303)
event-related-potential-evidence-attentional-inhibition-return.asp

474.

Signs of REM sleep dependent enhancement of implicit face memory: a repetition priming study.

Faces are processed and stored in distinct neuroanatomical systems. Based on evidence of a critical role of sleep in memory processes, we investigated the impact of nocturnal sleep on implicit memories for faces in healthy men. Face repetition effects in ...
Ullrich Wagner, Manfred Hallschmid, Rolf Verleger, Jan Born (Biol Psychol, 200303)
signs-rem-sleep-dependent-enhancement-implicit-face-memory-repetition.asp

475.

Influence of terminal action requirements on action-centered distractor effects.

Tipper (1985; Q J Exp Psychol A 37:571-590) has suggested that competing responses programmed to distracting stimuli are inhibited based on their relationship to the action being performed. The present paper reports two experiments designed to examine ...
P L Weir, D J Weeks, T N Welsh, D Elliott, R Chua, E A Roy, J Lyons (Exp Brain Res, 200303)
influence-terminal-action-requirements-action-centered-distractor.asp

476.

Modulation of intracortical neuronal circuits in human hand motor area by digit stimulation.

We investigated the changes in intracortical neuronal circuits of the hand motor cortex following sensory stimulation of the fingers in 11 healthy subjects. Motor evoked potentials (MEPs) were recorded from intrinsic hand muscles (right first dorsal ...
Masahito Kobayashi, Jane Ng, Hugo Théoret, Alvaro Pascual-Leone (Exp Brain Res, 200303)
modulation-intracortical-neuronal-circuits-human-hand-motor-area.asp

477.

Relationship between priming and recognition in deterministic and probabilistic sequence learning.

Exposure to a repeating sequence of target stimuli in a speeded localization task can support both priming of sequence-consistent responses and recognition of sequence components. In 3 experiments with both deterministic and probabilistic sequences, the ...
David R Shanks, Leonora Wilkinson, Shelley Channon (J Exp Psychol Learn Mem Cogn, 200303)
relationship-priming-recognition-deterministic-probabilistic-sequence.asp

478.

Lack of sex effect on brain activity during a visuomotor response task: functional MR imaging study.

BACKGROUND AND PURPOSE: As more individuals are enrolled in clinical functional MR imaging (fMRI) studies, an understanding of how sex may influence fMRI-measured brain activation is critical. METHODS: We used fixed- and random-effects models to study ...
Nina Mikhelashvili-Browner, David M Yousem, Colin Wu, Michael A Kraut, Christina L Vaughan, Kader Karli Oguz, Vince D Calhoun (AJNR Am J Neuroradiol, 200303)
lack-sex-effect-brain-activity-visuomotor-response-task-functional-mr.asp

479.

The electrically elicited R2 blink reflex consists of distinct subcomponents.

In previous studies the later parts of the electrically evoked R2 blink reflex has been found to be more susceptible to the inhibitory effects of repetitive stimulation and prepulses. Consequently, it has been suggested that the R2 reflex may be composed ...
U Meincke, R Töpper, E Gouzoulis-Mayfrank (Electromyogr Clin Neurophysiol, 200303)
electrically-elicited-r-blink-reflex-consists-distinct-subcomponents.asp

480.

Effects of acute procyclidine administration on prepulse inhibition of the startle response in schizophrenia: a double-blind, placebo-controlled study.

Prepulse inhibition (PPI) of the startle response refers to a reduction in response to a strong stimulus (pulse) if this is preceded shortly by a weak non-startling stimulus (prepulse). Consistent with theories of deficiencies in early stages of ...
Veena Kumari, Elizabeth Zachariah, Adrian Galea, Hugh C Jones, Mrigen Das, Ravi Mehrotra, David Taylor, Tonmoy Sharma (J Psychopharmacol, 200303)
effects-acute-procyclidine-administration-prepulse-inhibition-startle.asp