Showing papers in "Brain and Cognition in 1990"

TL;DR: The results provide qualified support for the hypothesis that the high levels of gonadal steroids present at the luteal phase of the cycle may facilitate skills favoring females, but be detrimental to skills favoring males.

TL;DR: Investigation of the relationship between intrahemispheric location of lesion and disturbances of emotional expression and comprehension indicated involvement of the basal ganglia most frequently in aprosodic syndromes followed by anterior temporal lobe and insula lesions.

TL;DR: The earlier N300 effects, which do not appear to occur when ERPs are evoked by semantically primed and unprimed words, could suggest that the semantic processing of pictorial stimuli involves neural systems different from those associated with the semanticprocessing of words.

TL;DR: The final three experiments suggest that when orienting conflict is introduced the rightward bias becomes more robust than the leftward bias and the relevance of these findings to understanding unilateral neglect resulting from parietal damage is discussed.

TL;DR: While patients demonstrated considerable evidence of preserved function, impaired performance on a subgroup of tasks was consistent with selective frontostriatal system involvement, with reference to the underlying pathological processes in Parkinson's disease.

TL;DR: In this article, a basic neuropsychological examination of language and praxic abilities was administered to extreme educational groups (100 illiterates and 100 professionals). Subjects were matched according to sex and age (16-25, 26-35, 36-45, 46-55, and 56-65).

TL;DR: Some insight into the neural basis of perceptual completion and of unawareness of sensory loss may derive from considering sensory systems and associative cortex as parallel-distributed processing mechanisms.

TL;DR: It is concluded that cortical regulation of cortisol secretion in emotion-related situations is under primary control of the right hemisphere.

TL;DR: Object alternation was significantly impaired in Alzheimer's disease compared to Parkinson's dementia, even though both groups were equated for severity of dementia, and error analysis revealed that the performance of the Alzheimer's patients but not the Parkinson's patients, was characterized by abnormal response perseveration.

TL;DR: Patients with lesions in the left neocerebellum showed deficits in cognitive operations in three dimensional space, consistent with the right forebrain dominance for spatial functions, and prolonged intracranial pressure resulted in a mild overall cognitive impairment.

TL;DR: A picture fragment test was used to compare the priming and cued recall performances of patients with Huntington's disease, patients with dementia of the Alzheimer type (DAT), and neurologically intact normal control subjects, finding that HD patients' memory impairment is characterized primarily by an inability to initiate systematic retrieval strategies.

TL;DR: Slowing of CRT proved to be a sensitive test for AD, due to changes in both the sensory/motor and the decisional components of the CRT model, however, these changes were found in both AD and slower, older controls.

TL;DR: The present study indicates that some of the inconsistencies in studies of the lateralization of mental rotation may be a consequence of uncontrolled individual differences in the general level of spatial ability.

TL;DR: The study underlines the large degree of interindividual variation in dendrite structure and the need for much more extensive information about the life history of individuals who serve as subjects for this type of study.

TL;DR: Four experiments test the homolog activation hypothesis, which states that bilateral stimulation by similar stimuli activates homologous areas of the two hemispheres, disrupting communication between the areas.

TL;DR: The control of a dynamic bimanual task was examined by manipulating two independent factors that potentially influence interlimb interference, with a clear performance asymmetry, with greater interference evident when the sequential action was generated by the nonpreferred left arm than by the preferred right arm.

TL;DR: This study provides support for the view that family handedness and spatial experiences are important factors influencing mental rotation ability in women.

TL;DR: The results indicate that about half of the variation in asymmetry scores on both tachistoscopic and free-vision tasks is attributable to individual differences in characteristic perceptual asymmetry.

TL;DR: Laughter/elated mood was statistically more frequent following right hemisphere injection while crying was statistically associated with left hemisphere injections, which support differing specialization of emotional expression in the right and left cerebral hemispheres and their subcortical connections.

TL;DR: Two experiments were designed to measure target detectability as a function of its location in the visual field where all possible target locations were equidistant from the fovea and a right visual field detection superiority was obtained in both experiments.

TL;DR: An examination of the relevant data and experimental procedures provides little support for claims that the left hemisphere is specialized for the generation of mental visual images, and suggests that both hemispheres simultaneously and conjointly contribute to this process.

TL;DR: The relative participation of left- and right-hemisphere functions in verbal and spatial processing with musical composers, instrumentalists, painters, and non-musicians from student and junior high school populations was investigated and males, irrespective of talents, were lateralized stronger than females.

TL;DR: A patient with Balint's syndrome caused by bilateral parieto-occipital infarctions did not benefit from cues directing attention to the left or right visual field, suggesting a defect in shifting attention that may occur following bilateral parietal lesions.

TL;DR: The findings indicate that these hemispheric asymmetries in attentional control contribute to hand preferences in certain sensorimotor tasks and favor a state of optimal attentional and intentional preparation of the right hand.

TL;DR: Longitudinal data from 84 head-injured children and adolescents, who were tested at three points in the first year postinjury, were analyzed to determine the best combination of demographic, injury-related, and behavioral factors predicting cognitive performance.

TL;DR: Differences in interhemispheric coherence recorded in six left- and six right-handed normal subjects during periods of wakefulness, stage REM, stage 2, and stage 3/4 sleep supported the interpretation that sleep in general is a state of heightened cortical coordination.

TL;DR: Overall, expressions viewed in the reversed orientation were rated as more left-sided than in the original orientation, consistent with previous research demonstrating a left hemispace bias for free-field viewing of emotional faces.

TL;DR: The surge of the microgeny to a surface that dissolves the instant it appears, the priority of the Self in the unfolding sequence, the feeling of agency, create a Self in a state of becoming, a Self that travels in time like the crest of a wave, always in pursuit of a future just beyond the grasp of the present.

TL;DR: Investigations of the face processing abilities of SP, a right-handed woman who had suffered a subarachnoid haemorrhage from a right middle cerebral artery aneurysm, suggest that her lack of insight into her face recognition problems involves a deficit-specific anosognosia, resulting from impairment of domain-specific monitoring abilities.

TL;DR: Two forms of a Chimeric Faces Free-Vision Task used to estimate cerebral asymmetry for perceiving facial expression were given to young male subjects, with results suggesting that the average left bias in the present male group may reflect right-hemisphere specialization for processing of facial expression.