Form Perception

41.

Binocular recognition summation in the peripheral visual field: contrast and orientation dependence.

Spatial frequency thresholds for recognition were measured for binocular and monocular viewing conditions at two contrast levels (95% and 7%). Measurements were obtained at the fovea and at four different eccentric retinal locations. Each eccentric ...
S Pardhan (Vision Res, 200305)
binocular-recognition-summation-peripheral-visual-field-contrast.asp

42.

Distributed neural activity during object, spatial and integrated processing in humans.

Information about the form and the spatial location of objects is seamlessly integrated during visual perception. We used event-related potentials (ERPs) to explore neural activity related to processing form, location or the combination of both kinds of ...
Emiliana R Simon-Thomas, Kim Brodsky, Cammy Willing, Rashmi Sinha, Robert T Knight (Brain Res Cogn Brain Res, 200305)
distributed-neural-activity-object-spatial-integrated-processing.asp

43.

Spatial scale contribution to early visual differences between face and object processing.

Event-related potential (ERP) studies have highlighted an occipito-temporal potential, the N170, which is larger for faces than for other categories and delayed by stimulus inversion of faces, but not of other objects. We examined how high-pass and ...
Valérie Goffaux, Isabel Gauthier, Bruno Rossion (Brain Res Cogn Brain Res, 200305)
spatial-scale-contribution-early-visual-differences-face-object.asp

44.

Does phonological encoding in speech production always follow the retrieval of semantic knowledge? Electrophysiological evidence for parallel processing.

In this article a new approach to the distinction between serial/contingent and parallel/independent processing in the human cognitive system is applied to semantic knowledge retrieval and phonological encoding of the word form in picture naming. In ...
Rasha Abdel Rahman, Werner Sommer (Brain Res Cogn Brain Res, 200305)
phonological-encoding-speech-production-follow-retrieval-semantic.asp

45.

Processing shape, motion and three-dimensional shape-from-motion in the human cortex.

Shape and motion are complementary visual features and each appears to be processed in unique cortical areas. However, object motion is a powerful cue for the perception of three-dimensional (3-D) shape, implying that the two types of information--motion ...
Scott O Murray, Bruno A Olshausen, David L Woods (Cereb Cortex, 200305)
processing-shape-motion-three-dimensional-shape-motion-human-cortex.asp

46.

Differential effects of cue changes and task changes on task-set selection costs.

A task-switching paradigm with a 2:1 mapping between cues and tasks was used to separate cue-switching processes (indexed through pure cue-switch costs) from actual task-switching processes (indexed through additional costs in case of cue and task ...
Ulrich Mayr, Reinhold Kliegl (J Exp Psychol Learn Mem Cogn, 200305)
differential-effects-cue-changes-task-changes-task-set-selection-costs.asp

47.

Cortical activation to illusory shapes as measured with magnetoencephalography.

Spatiotemporal patterns of cortical activation during the perceptual grouping of elements to form illusory shapes were estimated using anatomically constrained magnetoencephalography. Subjects were shown an array of Kanizsa-style figures which were ...
Eric Halgren, Janine Mendola, Catherine D R Chong, Anders M Dale (Neuroimage, 200304)
cortical-activation-illusory-shapes-measured-magnetoencephalography.asp

48.

Perception of shape-from-motion in macaque monkeys and humans.

Motion is one of the most efficient cues for shape perception. We conducted behavioral experiments to examine how monkeys perceive shapes defined by motion cues and whether they perceive them as humans do. We trained monkeys to perform a shape ...
Shumpei Unno, Reiko Kuno, Masato Inoue, Yasuo Nagasaka, Akichika Mikami (Primates, 200304)
perception-shape-motion-macaque-monkeys-humans.asp

49.

An electrophysiological study of scene effects on object identification.

The meaning of a visual scene influences the identification of visual objects embedded in it. We investigated the nature and time course of scene effects on object identification by recording event-related brain potentials (ERPs) and response times ...
Giorgio Ganis, Marta Kutas (Brain Res Cogn Brain Res, 200304)
electrophysiological-study-scene-effects-object-identification.asp

50.

The effect of feature frequency on short-term recognition memory.

We report two experiments using Sternbergs (1969) multitrial recognition-memory paradigm. We used colored shapes as stimuli and manipulated the frequency of the shapes (but not of the colors) across trials. For lures containing an extralist shape (i.e., ...
E E Johns, D J K Mewhort (Mem Cognit, 200303)
effect-feature-frequency-short-term-recognition-memory.asp