Titre : Cortex visuel

Cortex visuel : Questions médicales fréquentes

Termes MeSH sélectionnés :

Nerve Net
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?\nQuels signes indiquent une dysfonction du cortex visuel ?\nQuel rôle joue l'électroencéphalogramme (EEG) ?\nComment évaluer la vision des couleurs ?", "url": "https://questionsmedicales.fr/mesh/D014793?mesh_terms=Nerve+Net&page=1000#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Cortex visuel", "description": "Quels sont les symptômes d'une lésion du cortex visuel ?\nComment se manifeste l'agnosie visuelle ?\nQu'est-ce que l'hémianopsie ?\nQuels troubles peuvent affecter la perception des mouvements ?\nQuels symptômes indiquent une migraine occulaire ?", "url": "https://questionsmedicales.fr/mesh/D014793?mesh_terms=Nerve+Net&page=1000#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Cortex visuel", "description": "Comment prévenir les lésions cérébrales ?\nQuels examens réguliers sont recommandés ?\nComment réduire le risque de migraines ?\nQuels conseils pour protéger la santé oculaire ?\nComment gérer le stress pour prévenir les troubles visuels ?", "url": "https://questionsmedicales.fr/mesh/D014793?mesh_terms=Nerve+Net&page=1000#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Cortex visuel", "description": "Quels traitements existent pour les troubles visuels ?\nComment traiter l'agnosie visuelle ?\nQuels médicaments peuvent aider les migraines visuelles ?\nComment la rééducation visuelle fonctionne-t-elle ?\nQuels sont les traitements pour l'hémianopsie ?", "url": "https://questionsmedicales.fr/mesh/D014793?mesh_terms=Nerve+Net&page=1000#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Cortex visuel", "description": "Quelles complications peuvent survenir après une lésion du cortex visuel ?\nComment l'hémianopsie affecte-t-elle la vie quotidienne ?\nQuels risques sont associés à l'agnosie visuelle ?\nQuelles sont les conséquences des migraines fréquentes ?\nComment les troubles visuels peuvent-ils affecter l'éducation ?", "url": "https://questionsmedicales.fr/mesh/D014793?mesh_terms=Nerve+Net&page=1000#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Cortex visuel", "description": "Quels facteurs augmentent le risque de lésions cérébrales ?\nComment l'âge influence-t-il les troubles visuels ?\nQuels rôles jouent les antécédents familiaux ?\nComment le diabète affecte-t-il la vision ?\nQuels comportements augmentent le risque de migraines ?", "url": "https://questionsmedicales.fr/mesh/D014793?mesh_terms=Nerve+Net&page=1000#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment diagnostiquer une lésion du cortex visuel ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Un examen neurologique et des imageries cérébrales comme l'IRM sont utilisés." } }, { "@type": "Question", "name": "Quels tests évaluent la fonction visuelle ?", "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)

Usefulness of intraoperative nerve monitoring for giant type AB thymoma combined with an aberrant right subclavian artery: a case report.

Abnormal tumor vascularization and escalating tumor size represent two major impediments that make cancer surgery impossible or complicated.... Herein, we report the case of a giant thymoma (type AB) in a 58-year-old woman who presented with cough and yellow sputum. The thymoma grew extensively from the neck to the upper mediastinum. The pati... Intraoperative nerve monitoring was helpful in identifying the non-recurrent inferior laryngeal nerve and left recurrent laryngeal nerve....

Automatic detection of abnormal hand gestures in patients with radial, ulnar, or median nerve injury using hand pose estimation.

Radial, ulnar, or median nerve injuries are common peripheral nerve injuries. They usually present specific abnormal signs on the hands as evidence for hand surgeons to diagnose. However, without spec... Based on expert experience, we selected three hand gestures with predetermined features and rules as three independent binary classification tasks for abnormal gesture detection. Images from patients ... The study included 1,344 images, twenty-two patients, and thirty-four volunteers. In rule-based models, eight features were finally selected. The accuracy, sensitivity, and specificity were (1) 98.2, ... Our study provides a helpful tool for detecting abnormal gestures in radial, ulnar, or median nerve injuries with satisfying accuracy, sensitivity, and specificity. It confirms that hand pose estimati...

Improvement of erectile dysfunction using endothelial progenitor cells from fetal cerebral vasculature in the cavernous nerve injury of rats.

Because of limited differentiation to endothelium from mesenchymal stem cells, it has been strongly recommended to use endothelial progenitor cells for the regeneration of the damaged endothelium of c... Established immortalized circulating endothelial progenitor cells showed expression of human telomerase reverse transcriptase transcript by RT-PCR. They also showed the expression of vascular endothel... Telomerase reverse transcriptase-circulating endothelial progenitor cells from fetal brain vasculature could repair erectile dysfunction of rats with cavernous nerve injury....

In vivo corneal confocal microscopy as a non-invasive test to assess obesity induced small fibre nerve damage and inflammation.

To investigate small nerve fibre damage and inflammation at the level of the sub-basal nerve plexus (SNP) of severe obese patients and compare the results with those of healthy subjects.... This cross-sectional, observational study investigated the data of 28 patients (14 out of 28 prediabetic or diabetic) with severe obesity (Body Mass Index; BMI ≥ 40) and 20 healthy subjects. Corneal n... Mean age was 48.4±7.4 and 45.1 ± 5.8 in the control and obese group, respectively (p = 0.09). Mean BMI were 49.1 ± 7.8 vs. 23.3 ± 1.4 in obese vs. control group, respectively (p < 0.001). Mean CNFD, C... Imaging with IVCM is a feasible, non-invasive method to detect and quantify occult corneal nerve damage and increased inflammation in patients with obesity. This study suggests that obesity may be a s...

A case of herpes zoster ophthalmicus with optic neuritis of the total length of the optic nerve in the orbital space and ischemic optic neuropathy.

We herein report a case of optic neuritis and ischemic optic neuropathy associated with herpes zoster ophthalmicus and decreased visual acuity.... A 65-year-old man with no special medical history had a headache on the right side in December 2019, and a few days later, a facial rash appeared on the same side. A dermatologist diagnosed him with h... Various complications can occur with herpes zoster ophthalmicus, however, few reports have described cases of herpes zoster ophthalmicus associated with optic neuritis and ischemic optic neuropathy. T...

Application of methylene blue combined with ropivacaine intercostal nerve block in postoperative analgesia of autologous costal cartilage augmentation rhinoplasty.

To observe the effect of methylene blue combined with ropivacaine intercostal nerve block on postoperative analgesia after autologous costal cartilage augmentation rhinoplasty.... In this study 100 female patients who underwent autologous costal cartilage comprehensive augmentation rhinoplasty in Chongqing Huamei Plastic Surgery Hospital from April to November 2021 were randoml... The VAS scores of the experimental group were lower than those of the control group at all time points. At 6 h, 24 h and 48 h after surgery, the VAS score of the experimental group was lower than that... Intercostal nerve block with methylene blue combined with ropivacaine can achieve good postoperative analgesic effects in augmentation rhinoplasty with autologous costal cartilage....

Using Electrical Stimulation of the Ulnar Nerve Trunk to Predict Postoperative Improvement in Hand Clumsiness in Patients With Cervical Spondylotic Myelopathy.

A prospective cohort study.... To investigate whether the immediate and short-term effects of preoperative electrical peripheral nerve stimulation (ePNS) on performance of the 10-second test could predict the early postoperative ou... Previous studies have shown that early clinical improvement in CSM patients may be because of reversal of spinal cord ischemia after spinal cord compression.... We conducted a 10-second test before surgery, after ePNS, and at discharge (one week after surgery) in 44 patients with CSM who underwent C3-C7 laminoplasty and evaluated their correlations. The effec... The preoperative 10-second test showed the most improvement immediately after the administration of ePNS, with a gradual decrease for the first 30 minutes after completion. After the initial 30 minute... Early postoperative outcomes after CSM surgery may be predicted by the results of preoperative ePNS.... Level 3....

New Findings in Early-Stage Keratoconus: Lamina Cribrosa Curvature, Retinal Nerve Fiber Layer Thickness, and Vascular Perfusion.

Our aim was to investigate the involvement of posterior pole structures in eyes affected by keratoconus (KC). Optical coherence tomography (OCT) and OCT angiography (OCTA) were used to determine the s... Observational, cross-sectional, case-control analysis.... Single-center investigation involving patients with KC and healthy control subjects. Enrolled subjects underwent anterior segment OCT combined with Placido-disk topography, macular and optic nerve hea... Overall, 32 eyes with KC and an equal number of age- and axial length-matched control eyes were included in the analysis. Almost all (97%) of eyes with KC were classified as early stage. KC displayed ... Early-stage KC may be characterized by a posterior bowing of the LC along with a subtle peripapillary RNFL thinning and vascular impairment. These findings support the hypothesis that KC may be a corn...