scholarly journals The Relationship between Working Memory and Metaphor Comprehension in Patients with Right Hemisphere Damage

2017 ◽  
Vol 22 (4) ◽  
pp. 745-755 ◽  
Author(s):  
Hyo Dong Shin ◽  
Soyoung Choi
Keyword(s):  
Working Memory ◽  
Right Hemisphere ◽  
Metaphor Comprehension ◽  
Right Hemisphere Damage ◽  
The Relationship

The relationship between right hemisphere damage and gesture in spontaneous discourse

Aphasiology ◽  
2007 ◽  
Vol 21 (3-4) ◽  
pp. 299-319 ◽  
Author(s):  
Naomi Cocks ◽  
Kathryn Hird ◽  
Kim Kirsner
Keyword(s):  
Right Hemisphere ◽  
Right Hemisphere Damage ◽  
The Relationship

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.

Laterality of Damage Influences the Relationship Between Impairment and Arm Use After Stroke

2019 ◽  
Vol 25 (05) ◽  
pp. 470-478 ◽  
Author(s):  
Goldy Yadav ◽  
Kathleen Y. Haaland ◽  
Pratik K. Mutha
Keyword(s):  
Impact Assessment ◽  
Significant Interaction ◽  
Right Hemisphere ◽  
Motor Impairment ◽  
Motor Ability ◽  
Ability Test ◽  
Use Patterns ◽  
Right Hemisphere Damage ◽  
Patient Groups ◽  
The Relationship

AbstractObjectives:To investigate whether the relationship between arm use and motor impairment post-stroke is influenced by the hemisphere of damage.Methods:Right-handed patients with unilateral left hemisphere damage (LHD) or right (RHD) (n=58; 28 LHD, 30 RHD) were recruited for this study. The Arm Motor Ability Test and Functional Impact Assessment were used to derive arm use patterns. The Fugl-Meyer motor assessment scale was used to quantify the level of motor impairment.Results:A significant interaction between patient group and impairment level was observed for contralesional, but not ipsilesional arm use. For lower impairment levels, contralesional (right arm for LHD and left arm for RHD) arm use was greater in LHD than RHD patients. In contrast, for greater levels of impairment, there were no arm use differences between the two patient groups.Conclusions:When motor impairment is significant, it overrides potential effects of stroke laterality on the patterns of arm use. However, a robust influence of hemisphere of damage on the patterns of arm use is evident at lower impairment levels. This may be attributed to previously described arm preference effects. These findings suggest adoption of distinct strategies for rehabilitation following leftversusright hemisphere damage in right-handers, at least when the impairment is moderate to low. (JINS, 2019,25, 470–478)

Skin Conductance Response to Emotional Stimuli and Injury Location in Patients with Single Right Hemisphere Damage

2017 ◽  
Vol 41 (S1) ◽  
pp. S166-S166
Author(s):  
S. Álvarez ◽  
G. Lahera
Keyword(s):  
Skin Conductance ◽  
Emotional Processing ◽  
Skin Conductance Response ◽  
Right Hemisphere ◽  
Statistical Significance ◽  
Physiological Responses ◽  
Insular Cortex ◽  
Right Hemisphere Damage ◽  
Biofeedback System ◽  
The Relationship

IntroductionRight hemisphere damage (RHD) has been related to alterations in emotion processing. However, results regarding physiological responses are limited and inconsistent. More research regarding specific brain areas involved in emotional physiological responses is needed.ObjectivesTo examine the skin conductance response (SCR) to emotion eliciting images in patients with single RHD. To explore the relationship between SCR and brain injury location in patients with single RHD.AimsTo examine the relationship between SCR and cortical and subcortical damage in RH regarding emotional processing.MethodForty-one individuals with RHD due to stroke were assessed (mean age 68.5, SD 12.2, 51.1 males). The amplitude of event-related SCR was registered through a biofeedback system while observing 54 photographs from the international affective picture system (IAPS). Emotional images were classified using two different approaches: emotional valence (pleasant, unpleasant, neutral) and social vs. non-social content. Brain damage location, determined through medical records, included cortical (frontal, parietal, temporal and occipital lobes) as well as sub-cortical (caudate nucleus, thalamus, lenticular nucleus, insular cortex, basal ganglia and limbic system) structures.ResultsAmplitude of SCR to emotional images was significantly lower in individuals with occipital cortex injury compared to those with damage in other brain locations (P < 0.05). These results were consistent through all stimuli categories but non-social pictures, which presented the same pattern though, did not reach statistical significance.ConclusionsResults show a relationship between occipital areas in HD and SCR to emotional eliciting stimuli, suggesting occipital right lobe involvement in physiological emotional processing.Disclosure of interestThe authors have not supplied their declaration of competing interest.

scholarly journals Relationship Between Motor Capacity of the Contralesional and Ipsilesional Hand Depends on the Side of Stroke

2019 ◽  
Author(s):  
Rini Varghese ◽  
Carolee J. Winstein
Keyword(s):  
Regression Analysis ◽  
Left Hemisphere ◽  
Motor Function ◽  
Right Hemisphere ◽  
Stroke Survivors ◽  
Considerable Evidence ◽  
Right Hemisphere Damage ◽  
Function Test ◽  
Wolf Motor Function Test ◽  
The Relationship

AbstractThere is considerable evidence that after a stroke, ipsilesional deficits increase as contralesional impairment increases. Here, we asked if the relationship between the motor capacities of the two limbs differs based on the side of stroke. Forty-two pre-morbidly right-handed chronic stroke survivors (left hemisphere damage, LHD = 21) with mild-to-moderate paresis performed distal items of the Wolf Motor Function Test (dWMFT). We found that compared to RHD, the relationship between contralesional arm impairment (Upper Extremity Fugl-Meyer, UEFM) and ipsilesional hand motor capacity was stronger (R2LHD= 0.42; R2RHD < 0.01; z = 2.12; p = 0.03) and the slope was steeper (t = −2.03; p = 0.04) in LHD. Similarly, the relationship between contralesional dWMFT and ipsilesional hand motor capacity was stronger (R2LHD= 0.65; R2RHD= 0.09; z = 2.45; p = 0.01) and the slope was steeper (t = 2.03; p = 0.04) in LHD compared to RHD. Multiple regression analysis confirmed the presence of an interaction between contralesional UEFM and side of stroke (β3= 0.66 ± 0.30; p = 0.024) but only trended towards significance for the interaction between contralesional dWMFT and side of stroke (β3= −0.51 ± 0.34; p = 0.05). Results were confirmed after removal of potential outliers. Our findings suggest that the relationship between contra- and ipsi-lesional motor capacity depends on the side of stroke, such that the inter-limb relationship is stronger for stroke survivors with left hemisphere damage compared to those with right hemisphere damage.

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