Reaction Time

361.

Neocortical mechanisms in motor learning.

The ability to learn novel motor skills has fundamental importance for adaptive behavior. Neocortical mechanisms support human motor skill learning, from simple practice to adaptation and arbitrary sensory-motor associations. Behavioral and neural ...
Jerome N Sanes (Curr Opin Neurobiol, 200304)
neocortical-mechanisms-motor-learning.asp

362.

Temporal prediction errors in a passive learning task activate human striatum.

Functional MRI experiments in human subjects strongly suggest that the striatum participates in processing information about the predictability of rewarding stimuli. However, stimuli can be unpredictable in character (what stimulus arrives next), ...
Samuel M McClure, Gregory S Berns, P Read Montague (Neuron, 200304)
temporal-prediction-errors-passive-learning-task-activate-human.asp

363.

The learning of goal-directed locomotion: a perception-action perspective.

This study was designed to better understand the process underlying the learning of goal-directed locomotion. Subjects walked on a treadmill in a virtual reality setting and were asked to cross pairs of oscillating doors. The subjects behaviour was ...
Gilles Montagne, Martinus Buekers, Cyril Camachon, Aymar De Rugy, Michel Laurent (Q J Exp Psychol A, 200304)
learning-goal-directed-locomotion-perception-action-perspective.asp

364.

Comparison of fMRI activation at 3 and 1.5 T during perceptual, cognitive, and affective processing.

Previous studies comparing fMRI data acquired at 1.5 T and higher field strengths have focused on examining signal increases in the visual and motor cortices. No information is, however, available on the relative gain, or the comparability of data, ...
B Krasnow, L Tamm, M D Greicius, T T Yang, G H Glover, A L Reiss, V Menon (Neuroimage, 200304)
comparison-fmri-activation--t-perceptual-cognitive-affective.asp

365.

Redundancy gain in the acallosal brain.

The authors measured simple reaction time (RT) to visual stimuli, presented either singly to 1 or the other visual field or in bilaterally presented pairs, to 2 women with callosal agenesis. The stimuli were either white against a black background or ...
Melodie S Barr, Michael C Corballis (Neuropsychology, 200304)
redundancy-gain-acallosal-brain.asp

366.

Genetic correlations between brain volumes and the WAIS-III dimensions of verbal comprehension, working memory, perceptual organization, and processing speed.

We recently showed that the correlation of gray and white matter volume with full scale IQ and the Working Memory dimension are completely mediated by common genetic factors (Posthuma et al., 2002). Here we examine whether the other WAIS III dimensions ...
Daniëlle Posthuma, Wim F C Baaré, Hilleke E Hulshoff Pol, René S Kahn, Dorret I Boomsma, Eco J C De Geus (Twin Res, 200304)
genetic-correlations-brain-volumes-wais-iii-dimensions-verbal.asp

367.

The cognitive and neural architecture of sequence representation.

The authors theorize that 2 neurocognitive sequence-learning systems can be distinguished in serial reaction time experiments, one dorsal (parietal and supplementary motor cortex) and the other ventral (temporal and lateral prefrontal cortex). Dorsal ...
Steven W Keele, Richard Ivry, Ulrich Mayr, Eliot Hazeltine, Herbert Heuer (Psychol Rev, 200304)
cognitive-neural-architecture-sequence-representation.asp

368.

Exogenous and endogenous components of ultralate (C-fibre) evoked potentials following CO2 laser stimuli to tiny skin surface areas in healthy subjects.

CO2 laser stimulation of tiny skin surface areas on the hand dorsum generate ultralate laser evoked potentials (LEPs) with a major positivity maximal at the vertex at a latency of about 1 s. These potentials follow selective and direct activation of ...
Emmanuelle Opsommer, Jean-Michel Guérit, Léon Plaghki (Neurophysiol Clin, 200304)
exogenous-endogenous-components-ultralate-c-fibre-evoked-potentials.asp

369.

Attending to the distractor and old/new discriminations in negative priming.

When participants ignore an irrelevant distractor they typically show impaired responding to that item if it becomes the relevant stimulus on a subsequent trial. In Experiment 1 (N = 64), a masked white colour name was presented briefly before a Stroop ...
Daniel Healy, Jennifer S Burt (Q J Exp Psychol A, 200304)
attending-distractor-old-new-discriminations-negative-priming.asp

370.

Cortical analysis of visual context.

Objects in our environment tend to be grouped in typical contexts. How does the human brain analyze such associations between visual objects and their specific context? We addressed this question in four functional neuroimaging experiments and revealed ...
Moshe Bar, Elissa Aminoff (Neuron, 200304)
cortical-analysis-visual-context.asp