Attention

441.

Separating distractor rejection and target detection in posterior parietal cortex--an event-related fMRI study of visual marking.

Successful survival in a competitive world requires the employment of efficient procedures for selecting new in preference to old information. Recent behavioral studies have shown that efficient selection is dependent not only on properties of new ...
S Pollmann, R Weidner, G W Humphreys, C N L Olivers, K Müller, G Lohmann, C J Wiggins, D G Watson (Neuroimage, 200302)
separating-distractor-rejection-target-detection-posterior-parietal.asp

442.

Reproducibility of the word frequency effect: comparison of signal change and voxel counting.

We determined the reproducibility of both the direction and the effect size of the word frequency effect (WFE) as it relates to associative semantic judgments. Sixteen volunteers were scanned twice. At the group level of analysis, signal change and voxel ...
Michael W L Chee, Hwee Ling Lee, Chun Siong Soon, Christopher Westphal, Vinod Venkatraman (Neuroimage, 200302)
reproducibility-word-frequency-effect-comparison-signal-change-voxel.asp

443.

Contrasting effects of sensory limits and capacity limits in visual selective attention.

The effects of perceptual load and those of target-stimulus degradation on distractor processing were contrasted. Targets either had to be found among several nontargets (high perceptual load) or were presented alone and were intact (low perceptual ...
Nilli Lavie, Jan W de Fockert (Percept Psychophys, 200302)
contrasting-effects-sensory-limits-capacity-limits-visual-selective.asp

444.

Intrahemispherical activation, visuomotor transmission, and the Simon effect: comment on Wascher et al. (2001).

On the basis of 3 experiments E. Wascher, U. Schatz, T. Kuder, and R. Verleger (2001) concluded, "The variety of tasks subsumed under the term Simon effect turned out to be heterogeneous" (p. 749). This comment critically evaluates the validity of their ...
Todd Eric Roswarski, Robert W Proctor (J Exp Psychol Hum Percept Perform, 200302)
intrahemispherical-activation-visuomotor-transmission-simon-effect.asp

445.

Bimanual interference associated with the selection of target locations.

Four experiments were conducted to identify the locus of interference observed during the preparation of bimanual reaching movements. Target locations were specified by color, and the right-hand and left-hand targets could be either the same or a ...
Jörn Diedrichsen, Richard B Ivry, Eliot Hazeltine, Steven Kennerley, Asher Cohen (J Exp Psychol Hum Percept Perform, 200302)
bimanual-interference-associated-selection-target-locations.asp

446.

When a reappearance is old news: visual marking survives occlusion.

Performance in a visual search task becomes more efficient if half of the distractors are presented before the rest of the stimuli. This "preview benefit" may partly be due to inhibition of the old (previewed) items. The preview effect is abolished, ...
Melina A Kunar, Glyn W Humphreys, Kelly J Smith, Derrick G Watson (J Exp Psychol Hum Percept Perform, 200302)
reappearance-old-news-visual-marking-survives-occlusion.asp

447.

A negative order-repetition priming effect: inhibition of order in unattended auditory sequences?

A novel negative priming (NP) effect is reported in which serial recall for a sequence of visually presented digits was poorer if the same sequence was presented as an irrelevant auditory sequence on the previous trial (Experiments 1 and 2). The effect ...
Robert Hughes, Dylan M Jones (J Exp Psychol Hum Percept Perform, 200302)
negative-order-repetition-priming-effect-inhibition-order-unattended.asp

448.

Visual masking during the attentional blink: tests of the object substitution hypothesis.

When 2 masked targets are presented in a rapid sequence, correct identification of the 1st hinders identification of the 2nd. Visual masking of the 2nd target plays a critical role during this 2nd-target deficit, or "attentional blink" (AB). The object ...
Barry Giesbrecht, Walter F Bischof, Alan Kingstone (J Exp Psychol Hum Percept Perform, 200302)
visual-masking-attentional-blink-tests-object-substitution-hypothesis.asp

449.

Brain activation using triggered event-related fMRI.

EEG-triggered fMRI provides a method for localizing the sources of brain electrical activity, such as epileptic discharges. Extending single-image acquisitions, following an event on the EEG, into triggered image series acquisitions may allow BOLD time ...
Ivan Zimine, Mohamed L Seghier, Margitta Seeck, François Lazeyras (Neuroimage, 200302)
brain-activation-triggered-event-related-fmri.asp

450.

Form-from-motion: MEG evidence for time course and processing sequence.

The neural mechanisms and role of attention in the processing of visual form defined by luminance or motion cues were studied using magnetoencephalography. Subjects viewed bilateral stimuli composed of moving random dots and were instructed to covertly ...
M A Schoenfeld, M Woldorff, E Düzel, H Scheich, H-J Heinze, G R Mangun (J Cogn Neurosci, 200302)
form-motion-meg-evidence-time-course-processing-sequence.asp