Form Perception (Latest Articles)

Latest indexed articles for 'Form Perception'

Articles 41 to 50 of 200:

Serial position effects in the identification of letters, digits, and symbols.

30 Mar 2009 In 6 experiments, the authors investigated the form of serial position functions for identification of letters, digits, and symbols presented in strings. The results replicated findings obtained with the target search paradigm, showing an ...
rec_pub_19331502-serial-position-effects-identification-letters-digits-symbols.htm

Category-specificity in visual object recognition.

23 Mar 2009 Are all categories of objects recognized in the same manner visually? Evidence from neuropsychology suggests they are not: some brain damaged patients are more impaired in recognizing natural objects than artefacts whereas others show the opposite ...
rec_pub_19324331-category-specificity-visual-object-recognition.htm

Three-dimensional shape from second-order orientation flows.

12 Mar 2009 In images of textured surfaces, orientation flows formed by perspective convergence invariably convey 3D shape. We show that orientation flows formed by contrast-modulated (CM) and illusory contours (IC) convey 3D shape, and that both stimulus types ...
rec_pub_19289139-three-dimensional-shape-second-order-orientation-flows.htm

Perceiving electrical stimulation of identified human visual areas.

8 Mar 2009 We studied whether detectable percepts could be produced by electrical stimulation of intracranial electrodes placed over human visual areas identified with fMRI. Identification of areas was confirmed by recording local-field potentials from the ...
rec_pub_19276119-perceiving-electrical-stimulation-identified-human-visual-areas.htm

Mild cognitive impairment: loss of linguistic task-induced changes in motor cortex excitability.

8 Mar 2009 BACKGROUND: In amnestic mild cognitive impairment (aMCI), functional neuronal connectivity may be altered, as suggested by quantitative EEG and neuroimaging data. In young healthy humans, the execution of linguistic tasks modifies the excitability ...
rec_pub_19273828-mild-cognitive-impairment-loss-linguistic-task-induced-changes-motor.htm

Context and renewal of conditioned fear: an experimental evaluation using 20% carbon dioxide-enriched air as an unconditioned stimulus.

7 Mar 2009 This analogue experiment used fear conditioning and extinction procedures to establish and reduce fearful responding and then test for fear renewal following a context change. Healthy undergraduates (N=61) underwent a differential fear conditioning ...
rec_pub_19342193-context-renewal-conditioned-fear-experimental-evaluation-using-20.htm

Selective aspiration or neurotoxic lesions of orbital frontal areas 11 and 13 spared monkeys' performance on the object discrimination reversal task.

2 Mar 2009 Damage to the orbital frontal cortex (OFC) has long been associated with reversal learning deficits in several species. In monkeys, this impairment follows lesions that include several OFC subfields. However, the different connectional patterns of ...
rec_pub_19261875-selective-aspiration-neurotoxic-lesions-orbital-frontal-areas-11-13.htm

Segmentation and accuracy in copying and drawing: experts and beginners.

Mar 2009 As part of an ongoing investigation into real-world copying and drawing, I recorded the eye-hand drawing strategies of 16 subjects with drawing experiences ranging from expert to novice while they copied a line drawing of a standing nude. The ...
rec_pub_19264091-segmentation-accuracy-copying-drawing-experts-beginners.htm

Recognition and use of line drawings by children with severe intellectual disabilities: the effects of color and outline shape.

27 Feb 2009 Communication symbols for students with severe intellectual disabilities often take the form of computer-generated line drawings. This study investigated the effects of the match between color and shape of line drawings and the objects they ...
rec_pub_19280422-recognition-use-line-drawings-children-severe-intellectual.htm

Perception of 3D shape in context: contrast and assimilation.

27 Feb 2009 Whereas integration of shape and surround is held to occur through cue-dependent representations, we show that both cue-invariant and cue-dependent representations are involved. A central hinged plane and larger flanking plane were defined by either ...
rec_pub_19385089-perception-3d-shape-context-contrast-assimilation.htm

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