questionsmedicales.fr
Phénomènes psychologiques
Processus mentaux
Perception
Perception visuelle
Perception visuelle : Questions médicales fréquentes
Termes MeSH sélectionnés :
Diagnostic
5
Évaluation de la vision
Tests de vision
Imagerie par résonance magnétique
Électrorétinogramme
Troubles de la vision
Illusions visuelles
Ophtalmologie
Changements de vision
Maladies oculaires
Traumatismes oculaires
Symptômes
5
Vision floue
Difficultés de profondeur
Illusions visuelles
Perception visuelle
Agnosie
Troubles de la perception
Fatigue visuelle
Maux de tête
Synesthésie
Perception sensorielle
Prévention
5
Prévention des troubles visuels
Lunettes de soleil
Fatigue visuelle
Utilisation d'écrans
Tabagisme
Dégénérescence maculaire
Exercice physique
Santé oculaire
Traitements
5
Thérapie visuelle
Chirurgie oculaire
Thérapie visuelle
Coordination œil-main
Lunettes
Erreurs de réfraction
Chirurgie de la cataracte
Glaucome
Médicaments ophtalmiques
Glaucome
Complications
5
Perte de vision
Troubles émotionnels
Activités quotidiennes
Mobilité
Dépression
Isolement social
Aggravation des troubles
Traitement
Agnosie
Interactions sociales
Facteurs de risque
5
Âge
Antécédents familiaux
Diabète
Rétinopathie diabétique
Hypertension
Vaisseaux sanguins
Traumatismes oculaires
Risques visuels
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"text": "Des tests de vision, comme l'optométrie, évaluent la perception visuelle."
}
},
{
"@type": "Question",
"name": "Quels examens pour troubles de la perception ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'IRM et l'électrorétinogramme aident à diagnostiquer les troubles de la perception."
}
},
{
"@type": "Question",
"name": "Quels signes indiquent un problème visuel ?",
"position": 3,
"acceptedAnswer": {
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}
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{
"@type": "Question",
"name": "Quand consulter un spécialiste de la vue ?",
"position": 4,
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"name": "Quelles sont les causes de troubles visuels ?",
"position": 5,
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"@type": "Question",
"name": "Quels symptômes de troubles de la perception ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les symptômes incluent la vision floue, les halos, et les difficultés de profondeur."
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"@type": "Question",
"name": "Comment reconnaître une illusion visuelle ?",
"position": 7,
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"name": "Qu'est-ce que l'agnosie visuelle ?",
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"name": "Quels signes d'une fatigue visuelle ?",
"position": 9,
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"text": "Les signes incluent des maux de tête, des yeux secs et une vision floue après un usage prolongé."
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"@type": "Question",
"name": "Comment se manifeste la synesthésie visuelle ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "La synesthésie visuelle se manifeste par des associations involontaires entre couleurs et sons."
}
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"@type": "Question",
"name": "Comment prévenir les troubles de la perception ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Protégez vos yeux avec des lunettes de soleil et faites des examens réguliers."
}
},
{
"@type": "Question",
"name": "Quel rôle joue l'alimentation sur la vision ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Une alimentation riche en vitamines A, C et E peut aider à maintenir une bonne vision."
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"@type": "Question",
"name": "Comment réduire la fatigue visuelle ?",
"position": 13,
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"text": "Faites des pauses régulières lors de l'utilisation d'écrans pour réduire la fatigue visuelle."
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{
"@type": "Question",
"name": "Pourquoi éviter le tabac pour la vision ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Le tabac augmente le risque de maladies oculaires comme la dégénérescence maculaire."
}
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"@type": "Question",
"name": "L'exercice physique aide-t-il la vision ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'exercice régulier améliore la circulation sanguine, bénéfique pour la santé oculaire."
}
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"name": "Quels traitements pour troubles de la perception ?",
"position": 16,
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"text": "Les traitements incluent la thérapie visuelle, les lunettes et parfois la chirurgie."
}
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"@type": "Question",
"name": "Comment la thérapie visuelle aide-t-elle ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "La thérapie visuelle améliore la coordination œil-main et la perception visuelle."
}
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{
"@type": "Question",
"name": "Les lunettes corrigent-elles la perception ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les lunettes corrigent les erreurs de réfraction et améliorent la perception visuelle."
}
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"@type": "Question",
"name": "Quand envisager une chirurgie oculaire ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "La chirurgie est envisagée pour des problèmes structurels comme la cataracte ou le glaucome."
}
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"@type": "Question",
"name": "Quels médicaments pour troubles visuels ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des médicaments peuvent traiter des conditions comme le glaucome ou les infections oculaires."
}
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"@type": "Question",
"name": "Quelles complications des troubles visuels ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications incluent la perte de vision, l'isolement social et des troubles émotionnels."
}
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"@type": "Question",
"name": "Comment les troubles visuels affectent-ils la vie quotidienne ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Ils peuvent limiter les activités quotidiennes, affecter le travail et la mobilité."
}
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"@type": "Question",
"name": "Quels risques de dépression avec troubles visuels ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les troubles visuels augmentent le risque de dépression en raison de l'isolement social."
}
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"@type": "Question",
"name": "Les troubles de la perception peuvent-ils s'aggraver ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, sans traitement, certains troubles de la perception peuvent s'aggraver avec le temps."
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"@type": "Question",
"name": "Quelles sont les conséquences d'une agnosie visuelle ?",
"position": 25,
"acceptedAnswer": {
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"text": "L'agnosie visuelle peut entraîner des difficultés dans la reconnaissance d'objets et des interactions sociales."
}
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"@type": "Question",
"name": "Quels facteurs de risque pour troubles visuels ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les facteurs incluent l'âge, les antécédents familiaux et les maladies chroniques."
}
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"@type": "Question",
"name": "Le diabète augmente-t-il les risques visuels ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le diabète peut causer des complications oculaires comme la rétinopathie diabétique."
}
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"@type": "Question",
"name": "Comment l'hypertension affecte-t-elle la vision ?",
"position": 28,
"acceptedAnswer": {
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"text": "L'hypertension peut endommager les vaisseaux sanguins de l'œil, entraînant des troubles visuels."
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"name": "Le stress influence-t-il la perception visuelle ?",
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}
Expert en Médecine, Optimisation des Parcours de Soins et Révision Médicale
Validation scientifique effectuée le 24/04/2025
Contenu vérifié selon les dernières recommandations médicales
5 publications dans cette catégorie
Affiliations :
Department of Psychological Sciences, Ogden College of Science and Engineering, Western Kentucky University, 1906 College Heights Blvd. #22030, Bowling Green, KY, 42101-2030, USA. farley.norman@wku.edu.
Center for Applied Science in Health and Aging, Western Kentucky University, Bowling Green, KY, 42101-2030, USA. farley.norman@wku.edu.
Publications dans "Perception visuelle" :
3 publications dans cette catégorie
Affiliations :
Institute of Neurology, Wellcome Centre for Human Neuroimaging, University College London, London, UK.
Publications dans "Perception visuelle" :
3 publications dans cette catégorie
Affiliations :
Institute of Neurology, Max Planck UCL Centre for Computational Psychiatry and Ageing Research, London, UK.
Publications dans "Perception visuelle" :
3 publications dans cette catégorie
Affiliations :
Institute of Neurology, Wellcome Centre for Human Neuroimaging, University College London, London, UK.
Institute of Neurology, Max Planck UCL Centre for Computational Psychiatry and Ageing Research, London, UK.
Department of Experimental Psychology, University College London, London, UK.
Publications dans "Perception visuelle" :
2 publications dans cette catégorie
Affiliations :
Laboratory of Experimental Psychology, Department of Brain and Cognition, Faculty of Psychology and Educational Sciences, KU Leuven, Tiensestraat 102 - box 3711, 3000, Leuven, Belgium.
Publications dans "Perception visuelle" :
2 publications dans cette catégorie
Affiliations :
Humboldt-Universität zu Berlin, Berlin, Germany.
Publications dans "Perception visuelle" :
2 publications dans cette catégorie
Publications dans "Perception visuelle" :
2 publications dans cette catégorie
Publications dans "Perception visuelle" :
2 publications dans cette catégorie
Affiliations :
Department of Experimental Psychology, Justus Liebig University Giessen, 35394 Giessen, Germany, and Center for Mind, Brain and Behavior, Universities of Marburg, Giessen and Darmstadt, Germany. Electronic address: roland.w.fleming@psychol.uni-giessen.de.
Publications dans "Perception visuelle" :
2 publications dans cette catégorie
Affiliations :
Department of Psychology, Glendon College; and Center for Vision Research, York University, Toronto, Canada; email: patcav1@yorku.ca.
Publications dans "Perception visuelle" :
2 publications dans cette catégorie
Affiliations :
Department of Psychology, Justus Liebig University Giessen, Giessen, Germany.
Publications dans "Perception visuelle" :
1 publication dans cette catégorie
Affiliations :
Laboratory of Experimental Psychology, Department of Brain and Cognition, Faculty of Psychology and Educational Sciences, KU Leuven, Tiensestraat 102 - box 3711, 3000, Leuven, Belgium. eline.vangeert@kuleuven.be.
Publications dans "Perception visuelle" :
1 publication dans cette catégorie
Affiliations :
Department of Linguistics and Cognitive Science, University of Delaware, Newark, DE, USA. alon@udel.edu; https://pal.lingcogsci.udel.edu/.
Publications dans "Perception visuelle" :
1 publication dans cette catégorie
Affiliations :
Department of Linguistics and Philosophy, Massachusetts Institute of Technology, Cambridge, MA, USA. ejgr@mit.edu; https://sites.google.com/site/greenedwinj/.
Publications dans "Perception visuelle" :
1 publication dans cette catégorie
Affiliations :
Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD, USA. chaz@jhu.edu; https://perception.jhu.edu/.
Publications dans "Perception visuelle" :
1 publication dans cette catégorie
Affiliations :
Department of Psychiatry, Service of General Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland.
Laboratory of Cognitive Neuroscience, Brain Mind Institute, Faculty of Life Sciences, Swiss Federal Institute of Technology, Geneva, Switzerland.
Center for Neuroprosthetics, Faculty of Life Sciences, Swiss Federal Institute of Technology, Geneva, Switzerland.
Publications dans "Perception visuelle" :
1 publication dans cette catégorie
Affiliations :
Department of Psychiatry, Service of General Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland.
Center for Neuroprosthetics, Faculty of Life Sciences, Swiss Federal Institute of Technology, Geneva, Switzerland.
CNRS, LPNC UMR 5105, Université Grenoble Alpes, Grenoble, France.
Publications dans "Perception visuelle" :
1 publication dans cette catégorie
Affiliations :
Lifeline Research Foundation, Lifeline Australia, Deakin ACT, Australia.
School of Health and Human Sciences, Southern Cross University, Lismore NSW, Australia.
Publications dans "Perception visuelle" :
1 publication dans cette catégorie
Affiliations :
Department of Mechanical Engineering and Automation, Northeastern University, Shenyang, China.
Publications dans "Perception visuelle" :
1 publication dans cette catégorie
Affiliations :
Institut de Neurosciences des Systèmes (INS), Inserm (U1106), Aix Marseille University, Marseille, France.
Publications dans "Perception visuelle" :
In amyotrophic lateral sclerosis (ALS), motor neurons become hyperexcitable and spontaneously discharge electrical impulses causing fasciculations. These can be detected by two noninvasive methods: hi...
Twelve ALS patients and thirteen healthy participants each provided up to 24 minutes of recordings from the right biceps brachii (BB) and gastrocnemius medialis (GM). Two automated algorithms (Surface...
We identified 4,197 correlated electromechanical fasciculation events. HDSEMG reliably detected electromechanical events up to 30 mm below the skin surface with an inverse correlation between amplitud...
Prolonged fasciculation electromechanical latency indicates impairment of the excitation-contraction coupling mechanism, warranting further exploration as a potential novel biomarker of disease in ALS...
This study points to an electromechanical defect within the muscles of ALS patients....
Diagnosis of later-onset spinal muscular atrophy (SMA) can be challenging. This study aimed to evaluate the diagnostic properties of the detection of muscle fasciculations for SMA diagnosis in adolesc...
Fasciculations are an early clinical hallmark of amyotrophic lateral sclerosis (ALS), amenable to detection by high-density surface electromyography (HDSEMG). In conjunction with the Surface Potential...
Twenty patients with ALS and five patients with benign fasciculation syndrome (BFS) underwent serial 30 min HDSEMG recordings from biceps brachii and gastrocnemii. SPiQE was independently applied to a...
In total, 506 full recordings were included. The 5 min recordings demonstrated diverse and relatively poor agreement with the 30 min baselines across all parameters, muscles and patient groups (ICC = ...
For the detection and quantification of fasciculations in patients with ALS and BFS, HDSEMG recordings can be halved from 30 to 15 min without significantly compromising the primary outputs. Reliance ...
Loss of muscle thickness can be demonstrated in a wide spectrum of neuromuscular disorders, while fasciculations are more frequent in amyotrophic lateral sclerosis (ALS). In the current study, we aime...
The thickness and the presence of fasciculations in eight muscles were determined by sonography in patients with myopathy (22), polyneuropathy (36), ALS (91), and spinal muscular atrophy (SMA) (31) an...
Reduced muscle thickness in at least one relaxed muscle showed 92-100% sensitivity for diagnosing a neuromuscular disease, with a specificity of 85% for differentiating patients from heathy controls (...
Sonographic assessment of muscle thickness is a sensitive tool for diagnosing a wide spectrum of neuromuscular diseases, and may facilitate diagnosis even in patients with normal strength on neurologi...
Although fasciculation on muscle ultrasonography (MUS) is useful in diagnosing amyotrophic lateral sclerosis (ALS), its applicability to early diagnosis remains unclear. We aimed to develop and valida...
We investigated 100 patients with ALS, including 50 with early-stage ALS within 9 months from onset, and 100 without ALS. Fifteen muscles were bilaterally observed for 10 s each and the presence of fa...
Fasciculations on MUS in the brainstem or thoracic region had high specificity but limited sensitivities and predictive profiles for diagnosis of ALS. A machine learning-based model comprising eight m...
We developed and validated MUS-fasciculation-based diagnostic models for early- and later-stage ALS....
Fasciculation detected in relevant muscles on MUS can contribute to the diagnosis of ALS from the early stage....
We aimed to evaluate the effectiveness of clinical examination combined with texture analysis of magnetic resonance imaging (MRI) and fasciculation patterns of the lateral pterygoid muscle (LPM) in di...
We divided the patients into four groups: healthy control (HC), disk without displacement (DWoD), disk displacement with reduction (DDWR), and disk displacement without reduction (DDWoR). Demographic ...
Several clinical symptoms and signs, but not age or sex, differed significantly among groups. Oblique sagittal planar MRI revealed significant differences in the parameters of Angular Second Moment, C...
An 82-year-old man presented with 2-year lasting widespread muscular fasciculations, cramps, and limb stiffness, with spontaneous movements in the right lower limb, unsteady gait (Video 1), and falls....
The nicotinic symptom in Organo-Phosphate (OP) poisoning is an unusual presentation in an adult, as in our case of a 38-year-old man who also experienced decreased motor power of all limbs and diffuse...
Spinal and bulbar muscular atrophy (SBMA) is an X-linked recessive hereditary neuromuscular disorder caused by the expanded trinucleotide repeat in the androgen receptors gene. The major clinical mani...
The patient showed mildly progressive fatigue in the muscles of mastication over 3 years. Neurological examination showed facial muscle weakness and a wasting tongue with fasciculations, but the weakn...
This case calls for more attention to muscular fatigue as the onset symptoms of Kennedy's disease. ECG screening is of importance in SBMA patients and further studies are needed to investigate the tit...
We report a patient with early-onset hereditary sensory and autonomic neuropathy type 1A (HSAN-1A) who developed a distinct phenotype, with tongue fasciculation and atrophy, due to a mutation at serin...