Titre : Cortex visuel

Cortex visuel : Questions médicales fréquentes

Termes MeSH sélectionnés :

Glymphatic System
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"position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des tests de champ visuel et d'acuité visuelle sont couramment utilisés." } }, { "@type": "Question", "name": "Quels signes indiquent une dysfonction du cortex visuel ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Des troubles de la perception visuelle, comme l'agnosie, peuvent indiquer une dysfonction." } }, { "@type": "Question", "name": "Quel rôle joue l'électroencéphalogramme (EEG) ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "L'EEG peut aider à détecter des anomalies électriques liées à des troubles visuels." } }, { "@type": "Question", "name": "Comment évaluer la vision des couleurs ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Des tests spécifiques comme le test de Ishihara sont utilisés pour évaluer la vision des couleurs." } }, { "@type": "Question", "name": "Quels sont les symptômes d'une lésion du cortex visuel ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes incluent des troubles de la vision, des hallucinations visuelles et des difficultés de reconnaissance." } }, { "@type": "Question", "name": "Comment se manifeste l'agnosie visuelle ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "L'agnosie visuelle se manifeste par l'incapacité de reconnaître des objets malgré une vision intacte." } }, { "@type": "Question", "name": "Qu'est-ce que l'hémianopsie ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "L'hémianopsie est une perte de vision dans une moitié du champ visuel, souvent due à des lésions cérébrales." } }, { "@type": "Question", "name": "Quels troubles peuvent affecter la perception des mouvements ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Des troubles comme la simultagnosie peuvent affecter la perception des mouvements et des objets." } }, { "@type": "Question", "name": "Quels symptômes indiquent une migraine occulaire ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes incluent des troubles visuels temporaires, comme des éclairs lumineux ou des taches." } }, { "@type": "Question", "name": "Comment prévenir les lésions cérébrales ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Éviter les traumatismes crâniens, adopter un mode de vie sain et contrôler les maladies vasculaires." } }, { "@type": "Question", "name": "Quels examens réguliers sont recommandés ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Des examens ophtalmologiques réguliers peuvent aider à détecter précocement des troubles visuels." } }, { "@type": "Question", "name": "Comment réduire le risque de migraines ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Éviter les déclencheurs connus, gérer le stress et maintenir une bonne hydratation peuvent aider." } }, { "@type": "Question", "name": "Quels conseils pour protéger la santé oculaire ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Porter des lunettes de soleil, éviter les écrans excessifs et avoir une alimentation équilibrée." } }, { "@type": "Question", "name": "Comment gérer le stress pour prévenir les troubles visuels ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Des techniques de relaxation comme le yoga et la méditation peuvent aider à réduire le stress." } }, { "@type": "Question", "name": "Quels traitements existent pour les troubles visuels ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Les traitements incluent la rééducation visuelle, la thérapie occupationnelle et parfois des médicaments." } }, { "@type": "Question", "name": "Comment traiter l'agnosie visuelle ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "La thérapie cognitive et des exercices de reconnaissance peuvent aider à traiter l'agnosie." } }, { "@type": "Question", "name": "Quels médicaments peuvent aider les migraines visuelles ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Des médicaments comme les triptans et les anti-inflammatoires peuvent soulager les migraines." } }, { "@type": "Question", "name": "Comment la rééducation visuelle fonctionne-t-elle ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "La rééducation visuelle utilise des exercices pour améliorer la perception et la reconnaissance visuelle." } }, { "@type": "Question", "name": "Quels sont les traitements pour l'hémianopsie ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Des stratégies de compensation et des exercices de champ visuel peuvent aider à gérer l'hémianopsie." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir après une lésion du cortex visuel ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications incluent des troubles cognitifs, des problèmes de coordination et des difficultés d'apprentissage." } }, { "@type": "Question", "name": "Comment l'hémianopsie affecte-t-elle la vie quotidienne ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "L'hémianopsie peut compliquer la conduite, la lecture et d'autres activités nécessitant une vision complète." } }, { "@type": "Question", "name": "Quels risques sont associés à l'agnosie visuelle ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "L'agnosie peut entraîner des difficultés dans les interactions sociales et des problèmes d'autonomie." } }, { "@type": "Question", "name": "Quelles sont les conséquences des migraines fréquentes ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Des migraines fréquentes peuvent entraîner des troubles de l'humeur, de l'anxiété et des absences au travail." } }, { "@type": "Question", "name": "Comment les troubles visuels peuvent-ils affecter l'éducation ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Les troubles visuels peuvent nuire à l'apprentissage, nécessitant des adaptations scolaires spécifiques." } }, { "@type": "Question", "name": "Quels facteurs augmentent le risque de lésions cérébrales ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Les traumatismes crâniens, les AVC et les maladies neurodégénératives augmentent le risque." } }, { "@type": "Question", "name": "Comment l'âge influence-t-il les troubles visuels ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Le vieillissement peut entraîner une dégénérescence des cellules nerveuses et des troubles visuels." } }, { "@type": "Question", "name": "Quels rôles jouent les antécédents familiaux ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Les antécédents familiaux de troubles neurologiques peuvent augmenter le risque de dysfonction visuelle." } }, { "@type": "Question", "name": "Comment le diabète affecte-t-il la vision ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Le diabète peut entraîner des complications oculaires comme la rétinopathie diabétique, affectant la vision." } }, { "@type": "Question", "name": "Quels comportements augmentent le risque de migraines ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Le stress, le manque de sommeil et une mauvaise alimentation peuvent déclencher des migraines." } } ] } ] }

Sources (10000 au total)

Recovery of glymphatic system function in patients with temporal lobe epilepsy after surgery.

To investigate the recovery of human glymphatic system (GS) function in patients with temporal lobe epilepsy (TLE) after successful anterior temporal lobectomy (ATL) using diffusion tensor image analy... We retrospectively analysed DTI-ALPS index in 13 patients with unilateral TLE before and after ATL, and compared the index with 20 healthy controls (HCs). Two-sample t tests and paired t tests were pe... The DTI-ALPS index before ATL was significantly lower in the hemisphere ipsilateral to the epileptogenic foci than in the contralateral hemisphere of the patients (p < 0.001, t = - 4.81) and in the ip... DTI-ALPS may be used as a quantitative biomarker evaluating surgical outcomes and TLE disease duration. DTI-ALPS index may also help localise epileptogenic foci in unilateral TLE. Overall, our study s... • DTI-ALPS index may contribute to epileptogenic foci lateralisation in TLE. • DTI-ALPS index is a potential quantitative feature evaluating surgical outcomes and TLE disease duration. • The GS provid...

Abnormally glymphatic system functional in patients with migraine: a diffusion kurtosis imaging study.

The diffusion tensor imaging analysis along the perivascular space (DTI-ALPS) method has been used to evaluate glymphatic system function in patients with migraine. However, since the diffusion tensor... The study included 29 healthy controls and 37 patients with migraine. We used diffusion imaging data from a 3T MRI scanner to calculate DTI-ALPS and DKI-ALPS indices of the two groups. We compared the... There was no significant difference in DTI-ALPS index between the two groups. Patients with migraine showed a significantly increased right DKI-ALPS index compared to healthy controls (1.6858 vs. 1.57... DKI-ALPS is a potential method to assess glymphatic system function and patients with migraine do not have impaired glymphatic system function....

Evaluation of the Glymphatic System Using the DTI-ALPS Index in Patients with Spontaneous Intracerebral Haemorrhage.

To investigate the function of the human glymphatic system (GS) in patients with spontaneous intracerebral haemorrhage (sICH) using diffusion tensor imaging analysis along with the perivascular space ... Twenty patients with sICH and 31 healthy controls (HCs) were recruited for DTI and susceptibility-weighted imaging scanning. The diffusivity along the perivascular spaces, as well as the projection fi... The DTI-ALPS index on the lesion side was significantly lower than that of the contralateral side in patients with sICH (... The present study confirmed that GS dysfunction on the ipsilateral side of the lesion is impaired in patients with haemorrhagic stroke, indicating that the GS may be a separate system in the left and ...

The asymmetry of glymphatic system dysfunction in patients with temporal lobe epilepsy: A DTI-ALPS study.

While the occurrence of glymphatic system dysfunction has been observed in temporal lobe epilepsy (TLE), the potential asymmetry of this system has yet to be investigated in the TLE context. We aimed ... 43 patients (left TLE (LTLE), n = 20; right TLE (RTLE), n = 23) and 39 healthy controls (HC) were enrolled in this study. The DTI-ALPS index was calculated for the left (left ALPS index) and right (ri... Both left ALPS index (p = 0.040) and right ALPS index (p = 0.001) of RTLE patients were significantly decreased, while only left ALPS index of LTLE patients (p = 0.005) was reduced. Compared to contra... The TLE patients exhibited altered ALPS indices, which could be triggered by glymphatic system dysfunction. Altered ALPS indices were more severe in ipsilateral than in the contralateral hemisphere. M...