scholarly journals Diagnostic of psychoemotional and cognitive impairments in acute ischemic stroke

2021 ◽  
Author(s):  
Anastasya . M. Tynterova
Keyword(s):  
Ischemic Stroke ◽  
Coping Strategies ◽  
Acute Ischemic Stroke ◽  
Left Hemisphere ◽  
Right Hemisphere ◽  
Cognitive Impairments ◽  
Self Control ◽  
Cerebral Hemispheres ◽  
Adaptive Coping ◽  
The Right

Aims: to assess the severity of cognitive, psychoemotional, behavioral disorders, the level of self-control and prevalence of certain coping strategies in patients with lesions of the right and left cerebral hemispheres after acute ischemic stroke. Materials and methods: The study included 60 patients with a diagnosis of ischemic stroke. Depending on the location of the stroke, patients were divided into two groups: Group 1 - 30 patients with lesions of the right hemisphere, Group 2 - 30 patients with lesions of the left hemisphere. The study was conducted on the 7th day of treatment and included: assessment of the cognitive status according to the Montreal scale (with additional scales for assessing the functions of the right hemisphere); assessment of the level of distress, depression, anxiety and somatization using the Four DimensionalSymptomQuestionnaire; assessment of mental and physical asthenia according to the MFI-20 scale, level of self-control using the Rotter'sLocus of Control Scale and coping strategies modality using E. Heim coping questionnaire. Results: The study established the prevalence of depression, a tendency towards non-adaptive coping strategies, ideational praxis related disorders understanding of metaphors and low level of self-control in relation to health in patients with lesions of the right hemisphere. Patients with ischemic stroke localized in the left hemisphere are characterized by a high level of mental asthenia, a choice of adaptive and relatively adaptive coping strategies, and a low level of self-control in respect to interpersonal relationships. Conclusions: The results of the study show that in the acute period of stroke there are qualitative and quantitative differences in neuropsychiatric symptoms of patients with lesions of the right and left cerebral hemispheres. The predominance of depression, cognitive impairments, and non-adaptive coping strategies in patients with lesions of the right hemisphere even with minimal or moderate motor deficits justifies early examination of the patient's behavioral, neuropsychiatric, and cognitive syndromes. The results of the study indicate the need to develop individual psychological rehabilitation programs for patients with lesions of the right and left cerebral hemispheres during the acute period of stroke.

Abstract WMP16: Eloquence-Weighted Imaging Improves Clinical Outcomes Prediction in Endovascular Stroke Therapy

Stroke ◽  
2016 ◽  
Vol 47 (suppl_1) ◽  
Author(s):  
Sunil A Sheth ◽  
David S Liebeskind ◽  
Conrad W Liang ◽  
Albert J Yoo ◽  
Reza Jahan ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Ct Scan ◽  
Acute Ischemic Stroke ◽  
Left Hemisphere ◽  
Right Hemisphere ◽  
Infarct Volume ◽  
Good Outcome ◽  
Relative Contribution ◽  
C Statistic ◽  
The Right

Background: Larger infarct size at presentation as determined by ASPECTS is associated with reduced likelihood of good outcome in acute ischemic stroke. However, infarct volume alone explains only a modest fraction (∼30%) of the variation in stroke outcome. Incorporating the relative eloquence of each ASPECTS region may improve the predictive power. Methods: In the combined database of the SWIFT and STAR trials, we identified patients treated with the Solitaire stent retriever. Using the 24hr CT scan, a multivariate linear regression was used to determine the relative contribution of each ASPECTS region, separately in each hemisphere, to freedom from disability (mRS 0-2) at 90 days. The coefficients from the regression were used to create an Eloquence-weighted ASPECTS score (EL-ASPECTS), which was compared against the original in predicting outcome based on the presentation CT scan. Results: Among 254 patients treated with ET, average age was 68, 64% were female, and NIHSS was mean 16 (SD +/- 5). Mean ASPECTS at presentation was 8.2 and 6.4 at 24 hrs. The most commonly involved ASPECTS regions were the lentiform nuclei (70%), insula (55%), and caudate (52%). In multivariate analysis, for the right hemisphere on 24hr CT, preservation of M1 (OR 1.6) and M4 (OR 1.2) regions were most strongly predictive of good outcome. For the left hemisphere on 24 hr CT, preservation of M3 (OR 2.6), and M5 (OR 2.5) and involvement of M2 (OR -1.9) were most predictive. Eloquence weights were assigned to all 20 R/L ASPECTS regions to create EL-ASPECTS. EL-ASPECTS, compared with original ASPECTS, demonstrated improved discrimination for independent functional outcome for right hemisphere (C-statistic 0.78 vs. 0.69), left hemisphere (0.78 vs. 0.72), and all stroke patients (0.76 vs. 0.70). On presentation CTs, multivariate analyses including age and presentation NIHSS demonstrated EL-ASPECTS but not original ASPECTS was predictive of good clinical outcome (OR 1.65, p<.01). Higher C-statistic values were seen with EL-ASPECTS in analysis of presentation CT scans. Conclusions: Incorporation of regional weighting into ASPECTS improves the ability to predict who will achieve independent functional outcomes with endovascular therapy in acute ischemic stroke.

scholarly journals Unexpected Reading Dissociation in a Brazilian “nisei” with Crossed Aphasia

1994 ◽  
Vol 7 (3-4) ◽  
pp. 165-170 ◽  
Author(s):  
P. Caramelli ◽  
M. A. M. P. Parente ◽  
M. L. Hosogi ◽  
M. Bois ◽  
A. R. Lecours
Keyword(s):  
Reading Comprehension ◽  
Ischemic Stroke ◽  
Right Hemisphere ◽  
Written Language ◽  
Cerebral Hemispheres ◽  
Japanese Language ◽  
Writing System ◽  
Crossed Aphasia ◽  
The Right ◽  
Reading Impairments

There is an increased interest in reading impairments in the Japanese language, due to its particular writing system which includes two different scripts, Kanji (logograms) and Kana (phonograms). Reading dissociations between Kanji and Kana have been described, showing that each system is processed differently by the cerebral hemispheres. We describe the case of a 68 year old Brazilian “nisei” (i.e. born from Japanese parents) who had knowledge of both Japanese and Portuguese. He presented an ischemic stroke affecting the right hemisphere and subsequently developed a Broca's aphasia and an unexpected reading dissociation, with an impairment in Kana reading comprehension and a good performance in Kanji and in Portuguese. These findings suggest that the patient's right and left hemispheres have assumed opposite roles not only for oral but also for written language decodification.

Discourse Representation in the Two Cerebral Hemispheres

2002 ◽  
Vol 14 (2) ◽  
pp. 228-242 ◽  
Author(s):  
Debra L. Long ◽  
Kathleen Baynes
Keyword(s):  
Left Hemisphere ◽  
Right Hemisphere ◽  
Cerebral Hemispheres ◽  
Discourse Model ◽  
Ambiguous Words ◽  
Priming Paradigm ◽  
Propositional Representation ◽  
The Individual ◽  
The Right ◽  
The Brain

Readers construct at least two interrelated representations when they comprehend a text: (a) a propositional representation containing the individual ideas that are derived from each sentence and the relations among them and (b) a discourse model, a representation of the context or situation to which the text refers. We used a paradigm called “item priming in recognition” to examine how these representations are stored in the cerebral hemispheres. In Experiment 1, the priming paradigm was used in combination with a lateralized visual field (VF) procedure. We found evidence that readers' representations were structured according to propositional relations, but only in the left hemisphere. Item recognition was facilitated when a concept was preceded by another concept from the same proposition when targets were presented to the left, but not to the right, hemisphere. We found priming in both hemispheres, however, when targets were context-appropriate senses of ambiguous words or topics of passages. In Experiment 2, we replicated the priming effects in three callosotomy patients. We argue that the distinction between a propositional representation and a discourse model is important with respect to how discourse is represented in the brain. The propositional representation appears to reside in the left hemisphere, whereas aspects of the discourse model appear to be represented in both hemispheres.

Effects of Left and Right Cerebral Lesions on the Naming Process

1972 ◽  
Vol 35 (3) ◽  
pp. 787-798 ◽  
Author(s):  
Alexis M. Nehemkis ◽  
Peter M. Lewinsohn
Keyword(s):  
Adverse Effect ◽  
Left Hemisphere ◽  
Right Hemisphere ◽  
Cerebral Hemispheres ◽  
Semantic Interference ◽  
Cerebral Lesions ◽  
Right Hemisphere Damage ◽  
Functional Differences ◽  
Left And Right ◽  
The Right

This experiment tested two major hypotheses: (1) Left hemisphere damage will have a more adverse effect on the naming process than on the ability to read and (2) increments in semantic interference will disrupt the performance of patients with left-hemisphere damage more than that of patients with right-hemisphere damage. Patients with left cerebral lesions consistently performed more poorly than the right-hemisphere-damage patients across all stimulus and response conditions. Aphasic lefts had more difficulty with naming than with reading. Hypothesis 2 was not supported. The findings are discussed with reference to the adequacy of the “verbal-nonverbal” dichotomy for describing functional differences between the left and right cerebral hemispheres.

Investigation of the Effect of Mode and Tempo on Emotional Responses to Music Using EEG Power Asymmetry

2013 ◽  
Vol 27 (3) ◽  
pp. 142-148 ◽  
Author(s):  
Konstantinos Trochidis ◽  
Emmanuel Bigand
Keyword(s):  
Left Hemisphere ◽  
Right Hemisphere ◽  
Emotional Responses ◽  
Interactive Effects ◽  
Eeg Activity ◽  
Musical Excerpt ◽  
Major Mode ◽  
Musical Modes ◽  
Slow Tempo ◽  
The Right

The combined interactions of mode and tempo on emotional responses to music were investigated using both self-reports and electroencephalogram (EEG) activity. A musical excerpt was performed in three different modes and tempi. Participants rated the emotional content of the resulting nine stimuli and their EEG activity was recorded. Musical modes influence the valence of emotion with major mode being evaluated happier and more serene, than minor and locrian modes. In EEG frontal activity, major mode was associated with an increased alpha activation in the left hemisphere compared to minor and locrian modes, which, in turn, induced increased activation in the right hemisphere. The tempo modulates the arousal value of emotion with faster tempi associated with stronger feeling of happiness and anger and this effect is associated in EEG with an increase of frontal activation in the left hemisphere. By contrast, slow tempo induced decreased frontal activation in the left hemisphere. Some interactive effects were found between mode and tempo: An increase of tempo modulated the emotion differently depending on the mode of the piece.

Dual Intentional Agency

2018 ◽  
Author(s):  
Elizabeth Schechter
Keyword(s):  
Left Hemisphere ◽  
Practical Reasoning ◽  
Right Hemisphere ◽  
Brain Surgery ◽  
Experimental Conditions ◽  
Split Brain ◽  
Intentional Agency ◽  
Intentional Agents ◽  
Experimental Findings ◽  
The Right

This chapter defends the 2-agents claim, according to which the two hemispheres of a split-brain subject are associated with distinct intentional agents. The empirical basis of this claim is that, while both hemispheres are the source or site of intentions, the capacity to integrate them in practical reasoning no longer operates interhemispherically after split-brain surgery. As a result, the right hemisphere-associated agent, R, and the left hemisphere-associated agent, L, enjoy intentional autonomy from each other. Although the positive case for the 2-agents claim is grounded mainly in experimental findings, the claim is not contradicted by what we know of split-brain subjects’ ordinary behavior, that is, the way they act outside of experimental conditions.

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