Visual Perception

281.

Neuronal correlates of perception in early visual cortex.

We used functional magnetic resonance imaging (fMRI) to measure activity in human early visual cortex (areas V1, V2 and V3) during a challenging contrast-detection task. Subjects attempted to detect the presence of slight contrast increments added to two ...
David Ress, David J Heeger (Nat Neurosci, 200304)
neuronal-correlates-perception-early-visual-cortex.asp

282.

Recognition memory for hand positions and spatial locations in patients with Huntingtons disease: differential visuospatial memory impairment?

Allocentric and egocentric memory was investigated in patients with Huntingtons disease (HD) and matched controls. Patients with HD and age- and education-matched healthy normal controls (NC) were administered two visuospatial recognition memory tasks, ...
Jennifer Duncan Davis, J Vincent Filoteo, Raymond P Kesner, John W Roberts (Cortex, 200304)
recognition-memory-hand-positions-spatial-locations-patients.asp

283.

Homophone interference effects in visual word recognition.

In three lexical decision experiments and one progressive demasking experiment, performance on low-frequency heterographic homophones having a high-frequency mate was compared with performance on non-homophone target words with or without high-frequency ...
Ludovic Ferrand, Jonathan Grainger (Q J Exp Psychol A, 200304)
homophone-interference-effects-visual-word-recognition.asp

284.

Neural correlates of the left-visual-field superiority in face perception appear at multiple stages of face processing.

Studies in healthy individuals and split-brain patients have shown that the representation of facial information from the left visual field (LVF) is better than the representation of facial information from the right visual field (RVF). To investigate ...
Galit Yovel, Jerre Levy, Marcia Grabowecky, Ken A Paller (J Cogn Neurosci, 200304)
neural-correlates-left-visual-field-superiority-face-perception.asp

285.

Vanishing dual-task interference after practice: has the bottleneck been eliminated or is it merely latent?

Practice can, in some cases, largely eliminate measured dual-task interference. Does this absence of interference indicate the absence of a processing bottleneck (defined as an inability to carry out certain stages in parallel)? The authors show that a ...
Eric Ruthruff, James C Johnston, Mark Van Selst, Shelly Whitsell, Roger Remington (J Exp Psychol Hum Percept Perform, 200304)
vanishing-dual-task-interference-after-practice-bottleneck-eliminated.asp

286.

Failures of retrieval and comparison constrain change detection in natural scenes.

In a change detection paradigm, a target object in a natural scene either rotated in depth, was replaced by another object token, or remained the same. Change detection performance was reliably higher when a target postcue allowed participants to ...
Andrew Hollingworth (J Exp Psychol Hum Percept Perform, 200304)
failures-retrieval-comparison-constrain-change-detection-natural.asp

287.

Understanding other peoples actions: intention and attention.

This study investigated the extent to which observation of an action performed by a human actor or a robotic arm may kinematically prime the performance of an observer subsequently required to perform a similar action. In Experiment 1, an actor reached ...
Umberto Castiello (J Exp Psychol Hum Percept Perform, 200304)
understanding-other-people-s-actions-intention-attention.asp

288.

Can blindness to response-compatible stimuli be observed in the absence of a response?

Blindness to response-compatible stimuli is the finding that targets are identified less accurately when presented during the planning or execution of a congruent response (e.g., right arrow presented during a right keypress) versus an incongruent ...
Biljana Stevanovski, Chris Oriet, Pierre Jolicoeur (J Exp Psychol Hum Percept Perform, 200304)
blindness-response-compatible-stimuli-observed-absence-response.asp

289.

Switching between tasks of unequal familiarity: the role of stimulus-attribute and response-set selection.

It has been reported that it is harder to switch to a strong, well-practiced task from a weaker, less-practiced task than vice versa. Three experiments replicated this surprising asymmetry and investigated how it is affected by a reduction in ...
Nick Yeung, Stephen Monsell (J Exp Psychol Hum Percept Perform, 200304)
switching-tasks-unequal-familiarity-role-stimulus-attribute-response.asp

290.

Changing your mind: on the contributions of top-down and bottom-up guidance in visual search for feature singletons.

Observers, searching for targets among distractor items, guide attention with a mix of top-down information--based on observers knowledge--and bottom-up information--stimulus-based and largely independent of that knowledge. There are 2 types of top-down ...
Jeremy M Wolfe, Serena J Butcher, Carol Lee, Megan Hyle (J Exp Psychol Hum Percept Perform, 200304)
changing-your-mind-contributions-top-down-bottom-up-guidance-visual.asp