Visual Perception

181.

Alphabetical knowledge from whole words training: effects of explicit instruction and implicit experience on learning script segmentation.

We investigated the possibility that pattern segmentation skills, specifically, phonological decoding, evolve implicitly in adult readers given training in an artificial script. In this Morse-like script each phoneme was represented by 2-3 discrete ...
T Bitan, A Karni (Brain Res Cogn Brain Res, 200305)
alphabetical-knowledge-whole-words-training-effects-explicit.asp

182.

Naïve impetus and Michottes "tool effect": evidence from representational momentum.

Displacement in the remembered position of targets in displays based on Michottes (1951/1991) tool effect paradigm was examined. Targets in tool effect displays exhibited less forward displacement than did otherwise identical targets presented in ...
Timothy L Hubbard, Alessia Favretto (Psychol Res, 200305)
naïve-impetus-michotte-s-tool-effect-evidence-representational.asp

183.

Representational blending in human conditional learning: Implications for associative theory.

In two experiments, participants were presented with pictures of different foods (A, B, C, D, X,) and learned which combinations resulted in an allergic reaction in a fictitious patient, Mr X. In Problem 1, when A or B (but not C or D) was combined with ...
K I Hodder, D N George, A S Killcross, R C Honey (Q J Exp Psychol B, 200305)
representational-blending-human-conditional-learning-implications.asp

184.

Online versus offline processing of visual feedback in the control of movement amplitude.

Researchers have suggested that visual feedback not only plays a role in the correction of errors during movement execution but that visual feedback from a completed movement is processed offline to improve programming on upcoming trials. In the present ...
Michael A Khan, Gavin Lawrence, Alissa Fourkas, Ian M Franks, Digby Elliott, Samantha Pembroke (Acta Psychol (Amst), 200305)
online-versus-offline-processing-visual-feedback-control-movement.asp

185.

On the role of peripheral visual afferent information for the control of rapid video-aiming movements.

It has been shown that, even for very fast and short duration movements, seeing ones hand in peripheral vision, or a cursor representing it on a video screen, resulted in a better direction accuracy of a manual aiming movement than when the task was ...
Patrick Bédard, Luc Proteau (Acta Psychol (Amst), 200305)
role-peripheral-visual-afferent-information-control-rapid-video.asp

186.

Gamma-band phase clustering and photosensitivity: is there an underlying mechanism common to photosensitive epilepsy and visual perception?

Photosensitive epilepsy (PSE) is the most common form of human reflex epilepsy, appearing in up to 10% of epileptic children. It also offers a highly reproducible model to investigate whether changes in neuronal activity preceding the transition to an ...
J Parra, S N Kalitzin, J Iriarte, W Blanes, D N Velis, F H Lopes da Silva (Brain, 200305)
gamma-band-phase-clustering-photosensitivity-underlying-mechanism.asp

187.

Visual attention while driving: sequences of eye fixations made by experienced and novice drivers.

Eye fixations were recorded while novice and experienced drivers drove along three types of roads (rural, suburban and dual-carriageway). An analysis of the content of those fixations was performed in order to identify differences in the scanpaths that ...
Geoffrey Underwood, Peter Chapman, Neil Brocklehurst, Jean Underwood, David Crundall (Ergonomics, 200305)
visual-attention-driving-sequences-eye-fixations-experienced-novice.asp

188.

Selective use of visual information signaling objects center of mass for anticipatory control of manipulative fingertip forces.

The present study examines whether visual information indicating the center of mass (CM) of an object can be used for the appropriate scaling of fingertip forces at each digit during precision grip. In separate experiments subjects lifted an object with ...
Iran Salimi, Wendy Frazier, Ralf Reilmann, Andrew M Gordon (Exp Brain Res, 200305)
selective-visual-information-signaling-objects-center-mass.asp

189.

Orientation discrimination in visual noise using global and local stimuli.

We have investigated orientation discrimination in visual noise using two types of high contrast, broadband stimuli. Discrimination thresholds are better for Local stimuli, in which the orientation signal is spatially limited, than for Global stimuli, in ...
David G Jones, Nicole D Anderson, Kathryn M Murphy (Vision Res, 200305)
orientation-discrimination-visual-noise-global-local-stimuli.asp

190.

Separating perceptual and decisional attention processes in the identification and categorization of integral-dimension stimuli.

Four observers performed matching, identification, and categorization with stimuli that varied along the integral dimensions: brightness and saturation. General recognition theory (F. G. Ashby & J. T. Townsend, 1986) was applied to quantify the separate ...
W Todd Maddox, Jeffrey L Dodd (J Exp Psychol Learn Mem Cogn, 200305)
separating-perceptual-decisional-attention-processes-identification.asp