Form Perception

161.

The stereoscopic anisotropy: individual differences and underlying mechanisms.

Observers are more sensitive to variations in the depth of stereoscopic surfaces in a vertical than in a horizontal direction; however, there are large individual differences in this anisotropy. The authors measured discrimination thresholds for surfaces ...
Paul B Hibbard, Mark F Bradshaw, Keith Langley, Brian J Rogers (J Exp Psychol Hum Percept Perform, 200204)
stereoscopic-anisotropy-individual-differences-underlying-mechanisms.asp

162.

Temporal integration between visual images and visual percepts.

Using a temporal integration task, subjects in 5 experiments were expected to combine information from temporally separated visual presentations. Evidence from these experiments indicated that perceptual information can be integrated with previously ...
James R Brockmole, Ranxiao Frances Wang, David E Irwin (J Exp Psychol Hum Percept Perform, 200204)
temporal-integration-visual-images-visual-percepts.asp

163.

Limitations of object-based feature encoding in visual short-term memory.

The present study investigated object-based feature encoding in visual short-term memory for 2 features within the same dimension that occur on different parts of an object. Using the change-detection paradigm, this experiment studied objects with 2 ...
Yaoda Xu (J Exp Psychol Hum Percept Perform, 200204)
limitations-object-based-feature-encoding-visual-short-term-memory.asp

164.

Isolation of stimulus characteristics contributing to Webers law for position.

To examine the independent contribution of various stimulus characteristics to positional judgements, we measured vernier alignment performance for three types of Gabor stimuli. In one, only the contrast envelope of the upper and lower stimulus elements ...
David Whitaker, Arthur Bradley, Brendan T Barrett, Paul V McGraw (Vision Res, 200204)
isolation-stimulus-characteristics-contributing-weber-s-law-position.asp

165.

Unraveling mechanisms for expert object recognition: bridging brain activity and behavior.

Behavioral sensitivity to object transformations and the response to novel objects (Greebles) in the fusiform face area (FFA) was measured several times during expertise training. Sensitivity to 3 transformations increased with expertise: (a) configural ...
Isabel Gauthier, Michael J Tarr (J Exp Psychol Hum Percept Perform, 200204)
unraveling-mechanisms-expert-object-recognition-bridging-brain.asp

166.

Prefrontal contributions to delayed spatial and object alternation: a positron emission tomography study.

Delayed alternation tasks are frequently used as probes of frontal lobe functioning. To clarify the neural substrates of delayed alternation performance in humans, the authors measured regional cerebral blood flow with H2(15)O positron emission ...
David H Zald, Clayton Curtis, Bradley S Folley, José V Pardo (Neuropsychology, 200204)
prefrontal-contributions-delayed-spatial-object-alternation-positron.asp

167.

Perceptual grouping in the Ternus display: evidence for an association field in apparent motion.

We present psychophysical experiments designed to reveal the role of facilitative contour interactions (the so-called association field) in apparent motion. We use the Ternus display (a trio of horizontally aligned elements oscillating in apparent ...
David Alais, Jean Lorenceau (Vision Res, 200204)
perceptual-grouping-ternus-display-evidence-association-field.asp

168.

Object recognition and object orientation in Alzheimers disease.

There are a wide variety of neuropsychological deficits in Alzheimers disease (AD), among which are disorders of visual perception and spatial cognition. The present study investigated the ability of 20 mildly to moderately deteriorated patients with AD ...
F Caterini, S Della Sala, H Spinnler, C Stangalino, O H Tumbull (Neuropsychology, 200204)
object-recognition-object-orientation-alzheimer-s-disease.asp

169.

Visual marking and visual change.

Five experiments investigated the types of changes that disrupt the preview effect--the benefit gained in difficult search tasks from presenting some distractors earlier in time. A shape change with or without an overall luminance change at the location ...
Derrick G Watson, Glyn W Humphreys (J Exp Psychol Hum Percept Perform, 200204)
visual-marking-visual-change.asp

170.

Ideomotor compatibility in the psychological refractory period effect: 29 years of oversimplification.

Four experiments examined whether the psychological refractory period (PRP) effect can be eliminated with ideomotor compatible (IM) but not stimulus-response compatible (SR) tasks, as reported by A. G. Greenwald and H. G. Shulman (1973). Their tasks were ...
Mei-Ching Lien, Robert W Proctor, Philip A Allen (J Exp Psychol Hum Percept Perform, 200204)
ideomotor-compatibility-psychological-refractory-period-effect-.asp