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Bramao, Ines; Faisca, Luis; Forkstam, Christian; Inacio, Filomena; Araujo, Susana; Petersson, Karl Magnus; Reis, Alexandra – Brain and Cognition, 2012
In this study, we used event-related potentials (ERPs) to evaluate the contribution of surface color and color knowledge information in object identification. We constructed two color-object verification tasks--a surface and a knowledge verification task--using high color diagnostic objects; both typical and atypical color versions of the same…
Descriptors: Visual Stimuli, Semantics, Identification, Infants
Clifford, Alexandra; Franklin, Anna; Holmes, Amanda; Drivonikou, Vicky G.; Ozgen, Emre; Davies, Ian R. L. – Brain and Cognition, 2012
Category training can induce category effects, whereby color discrimination of stimuli spanning a newly learned category boundary is enhanced relative to equivalently spaced stimuli from within the newly learned category (e.g., categorical perception). However, the underlying mechanisms of these acquired category effects are not fully understood.…
Descriptors: Control Groups, Stimuli, Classification, Correlation
Dreisbach, Gesine; Fischer, Rico – Brain and Cognition, 2012
Theories of human action control deal with the question of how cognitive control is dynamically adjusted to task demands. The conflict monitoring theory of anterior cingulate (ACC) function suggests that the ACC monitors for response conflicts in the ongoing processing stream thereby triggering the mobilization of cognitive control. Alternatively,…
Descriptors: Priming, Evidence, Conflict, Bilingualism
de Fockert, Jan W.; Theeuwes, Jan – Brain and Cognition, 2012
The role of frontal cortex in selective attention to visual distractors was examined in an attentional capture task in which participants searched for a unique shape in the presence or absence of an additional colour singleton distractor. The presence of the additional singleton was associated with slower behavioural responses to the shape target,…
Descriptors: Attention Control, Short Term Memory, Role, Brain Hemisphere Functions
Burnham, Bryan R.; Rozell, Cassandra A.; Kasper, Alex; Bianco, Nicole E.; Delliturri, Antony – Brain and Cognition, 2011
The present study examined a visual field asymmetry in the contingent capture of attention that was previously observed by Du and Abrams (2010). In our first experiment, color singleton distractors that matched the color of a to-be-detected target produced a stronger capture of attention when they appeared in the left visual hemifield than in the…
Descriptors: Attention Control, Spatial Ability, Eye Movements, Color
Danilova, M. V.; Mollon, J. D. – Brain and Cognition, 2009
Both classical and recent reports suggest a right-hemisphere superiority for color discrimination. Testing highly-trained normal subjects and taking care to eliminate asymmetries from the testing situation, we found no significant differences between left and right hemifields or between upper and lower hemifields. This was the case for both of the…
Descriptors: Testing, Brain Hemisphere Functions, Visual Discrimination, Visual Stimuli
Sasaki, Hitoshi; Morimoto, Akiko; Nishio, Akira; Matsuura, Sumie – Brain and Cognition, 2007
Three experiments were carried out to investigate hemispheric asymmetry in color processing among normal participants. In Experiment 1, it was shown that the reaction times (RTs) of the dominant and non-dominant hands assessed using a visual target presented at the central visual field, were not significantly different. In Experiment 2, RTs of…
Descriptors: Brain Hemisphere Functions, Color, Brain, Visual Perception
Maehara, Goro; Okubo, Matia; Michimata, Chikashi – Brain and Cognition, 2004
Participants were required to detect spot stimuli briefly presented to the upper, central, or lower visual fields. The stimuli were presented either on a green or a red background. Results showed that reaction time (RT) was shorter for the lower visual field (LVF) compared to the upper visual field (UVF). Furthermore, this LVF advantage was…
Descriptors: Visual Stimuli, Color, Visual Environment, Reaction Time
Cagigas, Xavier E.; Vincent Filoteo, J.; Stricker, John L.; Rilling, Laurie M.; Friedrich, Frances J. – Brain and Cognition, 2007
Parkinson's disease (PD) patients and healthy controls were administered a flanker task that consisted of the presentation of colored targets and distractors. Participants were required to attend to the center target and identify its color. The stimulus displays were either congruent (i.e., the target and flankers were the same color) or…
Descriptors: Patients, Intervals, Diseases, Reaction Time