Dominance of the right cerebral hemisphere for stereopsis

Carmon, Amiram; Bechtoldt, Harold P.

doi:10.1016/0028-3932(69)90042-6

Cited by 135 publications

(33 citation statements)

References 18 publications

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“…Carmon and Bechtoldt [3] and Durnford and Kimura [5] reported hemispheric differences using static RDSs. Cartoon and Bechtoldt presented RDSs to patients with hemispheric lesions and found significantly slower responses to the target when the lesions resided in the right hemisphere.…”

Section: Discussionmentioning

confidence: 99%

Difficulties in the definition of ?stereoscotoma? using temporal detection of thresholds of dynamic random dot stereograms

et al. 1989

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Temporal detection thresholds are reported from two subjects to dynamic random dot stereograms (DRDSs) of both crossed and uncrossed disparity. The stimuli were 1 degree square, of 0.25 degrees disparity and were presented at 81 positions in a 9 degree square central region. In both subjects crossed disparity stimuli were detected at shorter durations. One subject displayed particularly acute stereoscopic vision and presented a pattern of temporal thresholds increasing gradually with eccentricity. The other subject displayed evidence, particularly in response to uncrossed stimuli, of a 'stereo-scotoma' which was not evident in monocular testing or ophthalmologic examination. Criteria used to define 'stereo-scotoma' are discussed. It was concluded that, although left-right field differences may be found with a large subject sample, individual factors may be more important in the distribution of stereo sensitivity throughout the portion of visual field tested.

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Section: Discussionmentioning

confidence: 99%

Difficulties in the definition of ?stereoscotoma? using temporal detection of thresholds of dynamic random dot stereograms

et al. 1989

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“…Many patients with such an oculomotor apraxia show a deficiency of slow pursuit movements towards the side of the lesion, so that many objects are followed by repetitive, cogwheel-like movements (Cogan 1965). Some patients with parietal lobe lesions fail to converge on or accommodate for near objects or may show deficiencies in depth perception and stereopsis, which are accentuated when only binocular disparity cues are allowed (Carmon & Bechtoldt 1969, Benton & Hecaen 1970.…”

Section: Experimental Approachmentioning

confidence: 99%

Brain Mechanisms for Directed Attention

Mountcastle

1978

J R Soc Med

234

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In his inaugural address of this series in 1957, Lord Adrian (Adrian 1957) elucidated the general conceptual approach used by Sherrington in his analysis of the function of the nervous system, and showed how in his long and productive scientific career Sherrington established the science of neurophysiology as we know it in the English-speaking world. Later lecturers (Denny-Brown 1962, Granit 1968, Whitteridge 1972 have illustrated through their own discoveries the continuing influence of Sherrington's ideas upon contemporary neuroscience. You will see from that which follows that I have taken a somewhat different approach in my research of recent years (Mountcastle et 0/. 1975, Mountcastle 1976, Lynch et 01. 1977. Nevertheless, I like to believe that Sherrington would have found something of interest in it.The experiments I shall describe have their conceptual origin in part in the studies of parietal lobe function in humans, particularly those studies of Holmes (1918Holmes ( , 1936, Critchley (1953) and Denny-Brown & Chambers (1958), and those of similarly perceptive neurologists who have followed them. Their clinical studies have led to the proposition that the parietal lobe of the cerebrum, together with its system connections, contains a neural apparatus which generates an internal neural image of the body position within the immediately surrounding behavioural space and the gravitational field, of the spatial relation between the body parts, of the direction of gaze and of visual attention, and of dynamic changes in these postural and attitudinal sets.It is the major theme of my lecture that this parietal lobe mechanism also receives signals concerning the internal state of the organism in terms of needs and interests, and from time to time generates commands for action, for selective and directed visual attention into the immediate behavioural surround, for the visual grasping of objects, and for skilled coordinated actions of hand and eye. On the afferent side this apparatus appears to be linked to the 'second' visual system, that which projects via the superior colliculus and pretectum to the dorsal thalamus and the parietal lobe, as well as to a relayed and convergent input from the geniculostriate system via the dorsal thalamus. This command apparatus of the parietal lobe appears to function less automatically than do more familiar ones linking input to output directly. It is conditional in nature, and depends for action upon the outcome of a matching function between the neural signals of the nature of objects -quality, location, novelty -and those of central drive states. AttentionThe human observer possesses a limited information processing capacity, yet he is immersed in a sea of signals which possess important implications and consequences for him -guides for.

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“…This dominance of the right posterior hemisphere for three-dimensional and spatial percep tion corresponds to clinical findings [Carmon and Bechtholdt, 1969] and to results obtained with other experimental methods [Dunford and Kimura, 1971],…”

Section: Right-hemispheric Dominance Fo R Spatial Perceptionmentioning

confidence: 99%

Premotor Programming and Cortical Processing in the Cerebral Cortex

Altenmüller¹,

Jung²,

Winker³

et al. 1989

Brain Behav Evol

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Slow brain potentials were averaged from 12–15 EEG records (t = DC or 5 s) before and during voluntary hand movement and writing, spatial vision, language, and calculation tasks without vocalization and with visual fixation. EOG and writing pressure or EMG were recorded simultaneously. Skilled actions caused largest negative potentials in the contralateral sensorimotor hand area. Left-sided lateralization or bilaterally equal surface-negative potential shifts appeared during language and calculation tasks in 90% of the right-handers and in 75% of the left-handers. Right-sided lateralizations occurred during the viewing of perspective Necker figures or random-dot stereograms in the large majority of all subjects.

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Dominance of the right cerebral hemisphere for stereopsis

Cited by 135 publications

References 18 publications

Difficulties in the definition of ?stereoscotoma? using temporal detection of thresholds of dynamic random dot stereograms

Difficulties in the definition of ?stereoscotoma? using temporal detection of thresholds of dynamic random dot stereograms

Brain Mechanisms for Directed Attention

Premotor Programming and Cortical Processing in the Cerebral Cortex

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