Current Opinion in Neurology最新文献

{"title":"What visuospatial perception has taught us about the pathophysiology of vestibular migraine.","authors":"Qadeer Arshad, David Moreno-Ajona, Peter J Goadsby, Amir Kheradmand","doi":"10.1097/WCO.0000000000001232","DOIUrl":"10.1097/WCO.0000000000001232","url":null,"abstract":"<p><strong>Purpose of review: </strong>A decade has passed since vestibular migraine (VM) was formally established as a clinical entity. During this time, VM has emerged amongst the most common cause of episodic vertigo. Like all forms of migraine, VM symptoms are most prominent during individual attacks, however many patients may also develop persistent symptoms that are less prominent and can still interfere with daily activities.</p><p><strong>Recent findings: </strong>Vestibular inputs are strongly multimodal, and because of extensive convergence with other sensory information, they do not result in a distinct conscious sensation. Here we review experimental evidence that supports VM symptoms are linked to multisensory mechanisms that control body motion and position in space.</p><p><strong>Summary: </strong>Multisensory integration is a key concept for understanding migraine. In this context, VM pathophysiology may involve multisensory processes critical for motion perception, spatial orientation, visuospatial attention, and spatial awareness.</p>","PeriodicalId":11059,"journal":{"name":"Current Opinion in Neurology","volume":" ","pages":"32-39"},"PeriodicalIF":4.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11090135/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138451168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vascular neuro-otology: vestibular transient ischemic attacks and chronic dizziness in the elderly.","authors":"Adolfo M Bronstein, Jorge Kattah","doi":"10.1097/WCO.0000000000001229","DOIUrl":"10.1097/WCO.0000000000001229","url":null,"abstract":"<p><strong>Purpose of review: </strong>To explore the differential diagnosis of posterior fossa transient ischemic attacks (TIA) associated with vertigo and/or imbalance.To review the contribution of cerebral small vessel (SVD) disease to balance dysfunction and dizziness in the elderly.</p><p><strong>Main findings: </strong>TIAs involving vestibular structures that mediate the vestibulo-ocular and vestibulospinal reflexes remain a diagnostic challenge because they overlap with causes of benign episodic vertigo. Here, we summarize the results of multidisciplinary specialty efforts to improve timely recognition and intervention of peripheral and central vestibular ischemia. More papers confirm that SVD is a major cause of gait disability, falls and cognitive disorder in the elderly. Recent work shows that early stages of SVD may also be responsible for dizziness in the elderly. The predominant location of the white matter changes, in the frontal deep white matter and genu of the corpus callosum, explains the association between cognitive and balance dysfunction in SVD related symptoms.</p><p><strong>Summary: </strong>The evaluation of patients with intermittent vascular vertigo represent a major diagnostic challenge, recent reviews explore the ideal design approach for a multidisciplinary study to increase early recognition and intervention. Hemispheric white matter microvascular ischemia has been the subject of research progress - advanced stages are known to cause gait disorder and dementia but early stages are associated with \"idiopathic\" dizziness in the elderly.</p>","PeriodicalId":11059,"journal":{"name":"Current Opinion in Neurology","volume":" ","pages":"59-65"},"PeriodicalIF":4.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10779463/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138458509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Central vestibular networking for sensorimotor control, cognition, and emotion.","authors":"Marianne Dieterich, Thomas Brandt","doi":"10.1097/WCO.0000000000001233","DOIUrl":"10.1097/WCO.0000000000001233","url":null,"abstract":"<p><strong>Purpose of review: </strong>The aim of this study was to illuminate the extent of the bilateral central vestibular network from brainstem and cerebellum to subcortical and cortical areas and its interrelation to higher cortical functions such as spatial cognition and anxiety.</p><p><strong>Recent findings: </strong>The conventional view that the main function of the vestibular system is the perception of self-motion and body orientation in space and the sensorimotor control of gaze and posture had to be developed further by a hierarchical organisation with bottom-up and top-down interconnections. Even the vestibulo-ocular and vestibulo-spinal reflexes are modified by perceptual cortical processes, assigned to higher vestibulo-cortical functions. A first comparative fMRI meta-analysis of vestibular stimulation and fear-conditioning studies in healthy participants disclosed widely distributed clusters of concordance, including the prefrontal cortex, anterior insula, temporal and inferior parietal lobe, thalamus, brainstem and cerebellum. In contrast, the cortical vestibular core region around the posterior insula was activated during vestibular stimulation but deactivated during fear conditioning. In recent years, there has been increasing evidence from studies in animals and humans that the central vestibular system has numerous connections related to spatial sensorimotor performance, memory, and emotion. The clinical implication of the complex interaction within various networks makes it difficult to assign some higher multisensory disorders to one particular modality, for example in spatial hemineglect or room-tilt illusion.</p><p><strong>Summary: </strong>Our understanding of higher cortical vestibular functions is still in its infancy. Different brain imaging techniques in animals and humans are one of the most promising methodological approaches for further structural and functional decoding of the vestibular and other intimately interconnected networks. The multisensory networking including cognition and emotion determines human behaviour in space.</p>","PeriodicalId":11059,"journal":{"name":"Current Opinion in Neurology","volume":" ","pages":"74-82"},"PeriodicalIF":4.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10779454/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138458496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Editorial introductions.","authors":"","doi":"10.1097/WCO.0000000000001237","DOIUrl":"https://doi.org/10.1097/WCO.0000000000001237","url":null,"abstract":"","PeriodicalId":11059,"journal":{"name":"Current Opinion in Neurology","volume":"37 1","pages":"v-vi"},"PeriodicalIF":4.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139402266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does imaging of the ischemic penumbra have value in acute ischemic stroke with large vessel occlusion?","authors":"Pierre Seners, Jean-Claude Baron, Jean-Marc Olivot, Gregory W Albers","doi":"10.1097/WCO.0000000000001235","DOIUrl":"10.1097/WCO.0000000000001235","url":null,"abstract":"<p><strong>Purpose of review: </strong>In this review, we summarize current evidence regarding potential benefits and limitations of using perfusion imaging to estimate presence and extent of irreversibly injured ischemic brain tissue ('core') and severely ischemic yet salvageable tissue ('penumbra') in acute stroke patients with large vessel occlusion (LVO).</p><p><strong>Recent findings: </strong>Core and penumbra volumes are strong prognostic biomarkers in LVO patients. Greater benefits of both intravenous thrombolysis and endovascular therapy (EVT) are observed in patients with small core and large penumbra volumes. However, some current definitions of clinically relevant penumbra may be too restrictive and exclude patients who may benefit from reperfusion therapies. Alongside other clinical and radiological factors, penumbral imaging may enhance the discussion regarding the benefit/risk ratio of EVT in common clinical situations, such as patients with large core - for whom EVT's benefit is established but associated with a high rate of severe disability -, or patients with mild symptoms or medium vessel occlusions - for whom EVT's benefit is currently unknown. Beyond penumbral evaluation, perfusion imaging is clinically relevant for optimizing patient's selection for neuroprotection trials.</p><p><strong>Summary: </strong>In an emerging era of precision medicine, perfusion imaging is a valuable tool in LVO-related acute stroke.</p>","PeriodicalId":11059,"journal":{"name":"Current Opinion in Neurology","volume":" ","pages":"1-7"},"PeriodicalIF":4.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138458507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Is thrombectomy indicated in all ischemic stroke with large vessel occlusion?","authors":"Deep K Pujara, Faisal Al-Shaibi, Amrou Sarraj","doi":"10.1097/WCO.0000000000001239","DOIUrl":"10.1097/WCO.0000000000001239","url":null,"abstract":"<p><strong>Purpose of review: </strong>Purpose of this topical review is to examine the current randomized and nonrandomized evidence evaluating endovascular thrombectomy (EVT) in selected patient populations with acute ischemic stroke due to large vessel occlusions.</p><p><strong>Recent findings: </strong>After establishing EVT as the first-line treatment in patients with large vessel occlusions and limited ischemic changes on neuroimaging, recent trials successfully demonstrated efficacy and safety in patients with large core strokes and those with basilar occlusions up to 24 h of last known well. Nonrandomized evidence in patients with mild stroke severity, baseline disability, medium and distal vessel occlusions and time from last known well >24 h also suggested potential benefit of EVT in selected patients. Further randomized evidence will help establish EVT efficacy and safety in these populations.</p><p><strong>Summary: </strong>EVT is established as the de-facto treatment of choice in a significant proportion of patients presenting with acute ischemic stroke due to a large vessel occlusion and has shown potential benefits in additional patient subgroups. A rigorous risk-benefit assessment and discussions with patients and their families in the absence of randomized evidence should help facilitate an informed, individualized decision-making process for this revolutionary treatment in peripheral patient subgroups with limited evidence.</p>","PeriodicalId":11059,"journal":{"name":"Current Opinion in Neurology","volume":" ","pages":"8-18"},"PeriodicalIF":4.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138486951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vestibular syncope.","authors":"Jeong-Yoon Choi, Eek-Sung Lee, Ji-Soo Kim","doi":"10.1097/WCO.0000000000001226","DOIUrl":"10.1097/WCO.0000000000001226","url":null,"abstract":"<p><strong>Purpose of review: </strong>This review considers recent observations on vestibular syncope in terms of clinical features, laboratory findings, and potential mechanisms.</p><p><strong>Recent findings: </strong>Vestibular syncope, potentially associated with severe fall-related injuries, may develop multiple times in about one-third of patients. Meniere's disease and benign paroxysmal positional vertigo are the most common causes of vestibular syncope, but the underlying disorders remain elusive in 62% of cases with vestibular syncope. The postictal orthostatic blood pressure test exhibits a lower diagnostic yield. Vestibular function tests, such as cervical vestibular-evoked myogenic potentials and video head impulse tests, can reveal one or more abnormal findings, suggesting compensated or ongoing minor vestibular dysfunctions. The pathomechanism of syncope is assumed to be the erroneous interaction between the vestibulo-sympathetic reflex and the baroreflex that have different operating mechanisms and action latencies. The central vestibular system, which estimates gravity orientation and inertia motion may also play an important role in abnormal vestibulo-sympathetic reflex.</p><p><strong>Summary: </strong>Vestibular disorders elicit erroneous cardiovascular responses by providing false vestibular information. The results include vertigo-induced hypertension or hypotension, which can ultimately lead to syncope in susceptible patients.</p>","PeriodicalId":11059,"journal":{"name":"Current Opinion in Neurology","volume":"37 1","pages":"66-73"},"PeriodicalIF":4.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139402267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrical stimulation of the peripheral and central vestibular system.","authors":"Christophe Lopez, Kathleen E Cullen","doi":"10.1097/WCO.0000000000001228","DOIUrl":"10.1097/WCO.0000000000001228","url":null,"abstract":"<p><strong>Purpose of review: </strong>Electrical stimulation of the peripheral and central vestibular system using noninvasive (galvanic vestibular stimulation, GVS) or invasive (intracranial electrical brain stimulation, iEBS) approaches have a long history of use in studying self-motion perception and balance control. The aim of this review is to summarize recent electrophysiological studies of the effects of GVS, and functional mapping of the central vestibular system using iEBS in awake patients.</p><p><strong>Recent findings: </strong>The use of GVS has become increasingly common in the assessment and treatment of a wide range of clinical disorders including vestibulopathy and Parkinson's disease. The results of recent single unit recording studies have provided new insight into the neural mechanisms underlying GVS-evoked improvements in perceptual and motor responses. Furthermore, the application of iEBS in patients with epilepsy or during awake brain surgery has provided causal evidence of vestibular information processing in mostly the middle cingulate cortex, posterior insula, inferior parietal lobule, amygdala, precuneus, and superior temporal gyrus.</p><p><strong>Summary: </strong>Recent studies have established that GVS evokes robust and parallel activation of both canal and otolith afferents that is significantly different from that evoked by natural head motion stimulation. Furthermore, there is evidence that GVS can induce beneficial neural plasticity in the central pathways of patients with vestibular loss. In addition, iEBS studies highlighted an underestimated contribution of areas in the medial part of the cerebral hemispheres to the cortical vestibular network.</p>","PeriodicalId":11059,"journal":{"name":"Current Opinion in Neurology","volume":" ","pages":"40-51"},"PeriodicalIF":4.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10842451/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54228188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epidemiology and genetics of Meniere's disease.","authors":"Jose A Lopez-Escamez, Ying Liu","doi":"10.1097/WCO.0000000000001227","DOIUrl":"10.1097/WCO.0000000000001227","url":null,"abstract":"<p><strong>Purpose of review: </strong>This review discusses the recent developments on the understanding of epidemiology and genetics of Meniere's disease.</p><p><strong>Recent findings: </strong>Meniere's disease has been shown to be associated with several comorbidities, such as migraine, anxiety, allergy and immune disorders. Recent studies have investigated the relationship between environmental factors and Meniere's disease such as air pollution, allergy, asthma, osteoporosis or atmospheric pressure, reporting specific comorbidities in East Asian population. The application of exome sequencing has enabled the identification of genes sharing rare missense variants in multiple families with Meniere's disease, including OTOG and TECTA and suggesting digenic inheritance in MYO7A . Moreover, knockdown of DTNA gene orthologue in Drosophila resulted in defective proprioception and auditory function. DTNA and FAM136A knockout mice have been studied as potential mouse models for Meniere's disease.</p><p><strong>Summary: </strong>While it has attracted emerging attention in recent years, the study of Meniere's disease genetics is still at its early stage. More geographically and ethnically based human genome studies, and the development of cellular and animal models of Meniere's disease may help shed light on the molecular mechanisms of Meniere's disease and provide the potential for gene-specific therapies.</p>","PeriodicalId":11059,"journal":{"name":"Current Opinion in Neurology","volume":" ","pages":"88-94"},"PeriodicalIF":4.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49675440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aging of the vestibular system and its relationship to dementia.","authors":"Paul F Smith","doi":"10.1097/WCO.0000000000001231","DOIUrl":"10.1097/WCO.0000000000001231","url":null,"abstract":"<p><strong>Purpose of review: </strong>Since October 2022, substantial new information has been published on age-related effects on the vestibular system. Since much of this evidence relates to the risk of dementia, the purpose of this review will be to provide an overview of this new information and critically evaluate it.</p><p><strong>Recent findings: </strong>This review will address studies published since October 2022 regarding age-related effects on the vestibular system and their relationship to cognition and dementia. There has been a particular increase in the last year in the number of studies relating aging of the vestibular system to Alzheimer's disease (AD), further supporting the view that vestibular dysfunction is associated with an increased risk of dementia.</p><p><strong>Summary: </strong>The conclusion of these recent studies is that, consistent with previous studies, vestibular function declines with age, and that this age-related decline is associated with cognitive impairment and an increased risk of dementia. Efforts are being made to consider these implications for cognition in the treatment of vestibular disorders.</p>","PeriodicalId":11059,"journal":{"name":"Current Opinion in Neurology","volume":" ","pages":"83-87"},"PeriodicalIF":4.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138458495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}