PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Visual Perception”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,639 records · Page 91Linked to original sources
PubMed1977

Auditory-visual coordination in neonates.

Neonatal oculomotor behavior was observed under various conditions of visual and auditory stimulation. In 1 experiment babies were observed tracking a moving visual target with their eyes. Such tracking was uninfluenced by the addition of sound to the visual target, nor was it disrupted by the presence of a stationary auditory stimulus. The presentation of a moving auditory stimulus alone was not sufficient to elicit reliable tracking responses. In a second experiment, neonates failed to show ocular orientation toward a laterally presented sound. These findings are interpreted as illustrating the relative independence of auditory and visual perception during the neonatal period.

Acoustic Stimulation↗
PubMedDate not supplied

[The lateralization of human visual-spatial perception during verbal reinforcement].

Influence of positive (word "good") and negative (word "mistake") verbal reinforcement on the ability of mental construction of six geometric figures from two fragments administered tachistoscopically under backward masking conditions was studied in healthy persons and patients with chronic alcoholism. In healthy persons negative verbal reinforcement induced a reduction in the latency of N200 and growth of the amplitude of N200-P300 components of evoked potentials mainly in the right parietal area and vertex. There were no such changes in patients. Worse performance of the visuo-spatial task by the patients may be explained by the general suppression of the brain evoked potentials and disappearance of interhemispheric asymmetry which is characteristic for healthy persons and play an important role in visuo-spatial perception.

Adult↗
PubMed2004

Influence of age, sex, and education on the Visual Object and Space Perception Battery (VOSP) in a healthy normal elderly population.

The assessment of visual perception and cognition forms an important part of any general cognitive evaluation. We have studied the possible influence of age, sex, and education on a normal elderly Spanish population (90 healthy subjects) in performance in visual perception tasks. To evaluate visual perception and cognition, we have used the subjects performance with The Visual Object and Space Perception Battery (VOSP). The test consists of 8 subtests: 4 measure visual object perception (Incomplete Letters, Silhouettes, Object Decision, and Progressive Silhouettes) while the other 4 measure visual space perception (Dot Counting, Position Discrimination, Number Location, and Cube Analysis). The statistical procedures employed were either simple or multiple linear regression analyses (subtests with normal distribution) and Mann-Whitney tests, followed by ANOVA with Scheffe correction (subtests without normal distribution). Age and sex were found to be significant modifying factors in the Silhouettes, Object Decision, Progressive Silhouettes, Position Discrimination, and Cube Analysis subtests. Educational level was found to be a significant predictor of function for the Silhouettes and Object Decision subtests. The results of the sample were adjusted in line with the differences observed. Our study also offers preliminary normative data for the administration of the VOSP to an elderly Spanish population. The results are discussed and compared with similar studies performed in different cultural backgrounds.

Age Factors↗
PubMed1982

On the relativity of pitch.

The way we interpret a given set of sensory stimuli can depend very strongly on our choice of cues. The resulting ambiguity is particularly familiar in visual perception, and underlies many well-known visual illusions. It is shown that comparable ambiguities exist in the field of hearing, particularly pitch perception.

Auditory Pathways↗
PubMed1985

Neuropsychologic detection of abnormal mental decline in older persons.

We conducted comprehensive neuropsychologic assessment in normal 60- to 88-year-old persons and in patients with dementia of various causes, matched for age and sex. Patients with dementia performed significantly poorer on tests of short-term memory, temporal orientation, visual perception, and language. Further data analysis, including multivariate classification procedures, identified a combination of three tests (Visual Retention, Controlled Oral Word Association, and Temporal Orientation) that in a cross-validation study correctly classified 89% of cases with a high degree of probability. Only 6.5% of cases were misclassified, while 4.5% were in a questionable, borderline category. The battery constituted by these three discriminating tests provides a brief, easily administered neuropsychologic screening instrument that may be used by a variety of health professionals for the detection of abnormal mental decline in older persons.

Aged↗