scholarly journals The role of acceleration information in prism adaptation

1978 ◽  
Vol 23 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Andrea McCarter ◽  
H. H. Mikaelian
Keyword(s):  
Prism Adaptation

The Role of Movement Synchronization with an Auditory Signal in Producing Prism Adaptation

Perception ◽  
10.1068/p7036 ◽  
2012 ◽  
Vol 41 (8) ◽  
pp. 950-962 ◽  
Author(s):  
Mona A Bornschlegl ◽  
Manfred Fahle ◽  
Gordon M Redding
Keyword(s):  
Prism Adaptation ◽  
Auditory Signal ◽  
Movement Synchronization

The Possible Role of Eye-Muscle Potentiation in Several Forms of Prism Adaptation

Perception ◽  
1974 ◽  
Vol 3 (4) ◽  
pp. 477-485 ◽  
Author(s):  
S M Ebenholtz
Keyword(s):  
Prism Adaptation ◽  
Visual Adaptation ◽  
Visual Effects ◽  
Eye Muscle ◽  
Eye Muscles ◽  
Visual Distance ◽  
Muscle Potentiation

It is possible to explain a number of observations of visual adaptation to optical rearrangement and other visual effects as examples of the ‘Kohnstamm phenomenon’. This is the tendency for a stressed muscle to remain innervated for a period of time after cessation of the voluntary signal to relax. When this phenomenon operates with respect to eye muscles, it may be referred to as ‘eye-muscle potentiation’. Several studies and their results are presented that demonstrate eye-muscle potentiation effects on apparent visual distance. The implications of these studies for prism adaptation are discussed.

scholarly journals Anatomical predictors of successful prism adaptation in chronic visual neglect

2017 ◽  
Author(s):  
Marine Lunven ◽  
Gilles Rode ◽  
Clémence Bourlon ◽  
Christophe Duret ◽  
Raffaella Migliaccio ◽  
...  
Keyword(s):  
Right Hemisphere ◽  
The Body ◽  
Prism Adaptation ◽  
Visual Neglect ◽  
Non Invasive ◽  
Right Hemisphere Damage ◽  
Probable Role ◽  
Convenient Technique ◽  
The Relationship

AbstractVisual neglect is a frequent and disabling consequence of right hemisphere damage. Previous work demonstrated a probable role of posterior callosal dysfunction in the chronic persistence of neglect signs. Prism adaptation is a non-invasive and convenient technique to rehabilitate chronic visual neglect, but it is not effective in all patients. Here we aimed to assess the hypothesis that prism adaptation improves left neglect by facilitating compensation through the contribution of the left, undamaged hemisphere. We assessed the relationship between prism adaptation effects, cortical thickness and white matter integrity in a group of 14 patients with unilateral right-hemisphere strokes and chronic visual neglect. Results showed that patients who benefitted from prism adaptation had thicker cortex in temporo-parietal, prefrontal and cingulate areas of the left, undamaged hemisphere. Additionally, these patients had a higher fractional anisotropy value in the body and genu of the corpus callosum. Results from normal controls show that these callosal regions connect temporo-parietal, sensorimotor and prefrontal areas. Finally, shorter time intervals from the stroke tended to improve patients’ response to prism adaptation. We concluded that prism adaptation may improve left visual neglect by promoting the contribution of the left hemisphere to neglect compensation. These results support current hypotheses on the role of the healthy hemisphere in the compensation for stroke-induced, chronic neuropsychological deficits, and suggest that prism adaptation can foster this role by exploiting sensorimotor/prefrontal circuits, especially when applied at early stages post-stroke.

Adaptation of the Two Arms to opposite Prism Displacements

1975 ◽  
Vol 27 (4) ◽  
pp. 667-671 ◽  
Author(s):  
C. Prablanc ◽  
A. Tzavaras ◽  
M. Jeannerod
Keyword(s):  
Opposite Sign ◽  
Normal Subjects ◽  
Prism Adaptation ◽  
Adaptive Shifts

In normal subjects, the two arms were exposed separately to prismatic displacements of opposite sign, using the eye ipsilateral to the exposed arm. Opposite adaptive shifts were induced on each arm whether the eye ipsilateral to the arm (i.e. exposed to a displacement of the same sign as the arm) or the eye controlateral to the arm (i.e. exposed to a displacement of opposite sign) was used during testing. This result precludes the possible role of oculomotor signals in this type of prism adaptation.

The role of the right posterior parietal cortex in prism adaptation and its aftereffects

2021 ◽  
Vol 150 ◽  
pp. 107672
Author(s):  
Stefano Terruzzi ◽  
Damiano Crivelli ◽  
Alberto Pisoni ◽  
Giulia Mattavelli ◽  
Leonor Josefina Romero Lauro ◽  
...  
Keyword(s):  
Parietal Cortex ◽  
Posterior Parietal Cortex ◽  
Prism Adaptation ◽  
Posterior Parietal ◽  
The Right

Prism Adaptation in M1

2020 ◽  
pp. 1-11
Author(s):  
Francesco Panico ◽  
Lisa Fleury ◽  
Luigi Trojano ◽  
Yves Rossetti
Keyword(s):  
Primary Motor Cortex ◽  
Neural Correlates ◽  
Hierarchical Organization ◽  
Prism Adaptation ◽  
Therapeutic Effects ◽  
Treatment Resistant ◽  
Noninvasive Brain Stimulation ◽  
After Effect ◽  
Functional Interface

During prism adaptation (PA), active exposure to an optical shift results in sustained modifications of the sensorimotor system, which have been shown to expand to the cognitive level and serve as a rehabilitation technique for spatial cognition disorders. Several models based on evidence from clinical and neuroimaging studies offered a description of the cognitive and the neural correlates of PA. However, recent findings using noninvasive neurostimulation call for a reexamination of the role of the primary motor cortex (M1) in PA. Specifically, recent studies demonstrated that M1 stimulation reactivates previously vanished sensorimotor changes 1 day after PA, induces after-effect strengthening, and boosts therapeutic effects up to the point of reversing treatment-resistant unilateral neglect. Here, we articulate findings from clinical, neuroimaging, and noninvasive brain stimulation studies to show that M1 contributes to acquiring and storing PA, by means of persisting latent changes after the behavioral training is terminated, consistent with studies on other sensorimotor adaptation procedures. Moreover, we describe the hierarchical organization as well as the timing of PA mechanisms and their anatomical correlates, and identify M1 as an anatomo-functional interface between low- and high-order PA-related mechanisms.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management
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