Donna Young, Stacey D Elkhatib Smidt, Sushanth Bhat, Sudhansu Chokroverty
{"title":"Waveform Window #53: Hypersynchrony in REM Sleep.","authors":"Donna Young, Stacey D Elkhatib Smidt, Sushanth Bhat, Sudhansu Chokroverty","doi":"10.1080/21646821.2023.2204771","DOIUrl":"https://doi.org/10.1080/21646821.2023.2204771","url":null,"abstract":"In children, electroencephalogram (EEG) waveform hypersynchrony commonly occurs during sleep in the form of hypnagogic and hypnopompic/post-arousal hyper synchrony. Hypnagogic hypersynchrony is characterized by 3to 4.5-Hz paroxysmal, sinusoidal wave bursts of increased amplitude, which can be notched, and are prominent in the frontal, central, or frontocentral regions (Asadi-Pooya and Sperling 2019; Berry et al. 2020; Britton et al. 2016). Hypnagogic hypersynchrony is associated with drowsiness and is found in stages 1 and 2 of non-rapid eye movement (NREM) sleep. This hypersynchrony most often occurs in children under 13 years of age (Berry et al. 2020). Hypnopompic or postarousal hypersynchrony is a similar but less frequently recognized entity to its hypnagogic equivalent that instead follows an arousal (Asadi-Pooya and Sperling 2019; Viswanathan et al. 2021). Neither of these hypersynchronous waveforms have been described in rapid eye movement (REM) sleep. We report a case of hypersynchrony during REM sleep.","PeriodicalId":22816,"journal":{"name":"The Neurodiagnostic Journal","volume":"63 2","pages":"156-164"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10237969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ellen R. Grass Lecture: Disparities in Access to Neurodiagnostic Testing.","authors":"Suzette LaRoche","doi":"10.1080/21646821.2023.2211916","DOIUrl":"https://doi.org/10.1080/21646821.2023.2211916","url":null,"abstract":"<p><p>Limited access to EEG services in rural areas creates health disparities in neurological care, including unnecessary transfers and delays in diagnosis and treatment. Rural facilities face several challenges to expanding EEG resources, including a lack of neurologists, technologists, EEG equipment, and adequate IT infrastructure. Potential solutions include investment in innovative technology, expansion of the workforce, and development of hub-and-spoke EEG networks. Bridging the EEG gap requires collaboration between academic and community practices to advance practical technologies, train competent personnel and develop cost-effective resource-sharing strategies.</p>","PeriodicalId":22816,"journal":{"name":"The Neurodiagnostic Journal","volume":"63 2","pages":"117-130"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9635556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marshall F Wilkinson, Joseph Silvaggio, Anthony Kaufmann
{"title":"Cathodal Genesis of Ipsilateral Hand (Crossover) Motor Evoked Potentials: Evidence from a Patient with Previous Stroke.","authors":"Marshall F Wilkinson, Joseph Silvaggio, Anthony Kaufmann","doi":"10.1080/21646821.2023.2178807","DOIUrl":"https://doi.org/10.1080/21646821.2023.2178807","url":null,"abstract":"<p><p>A case is described where baseline transcranial electrical motor evoked potentials (TcMEP) and somatosensory evoked potentials (SSEP) results were unilaterally absent in a patient with previous hemispheric stroke undergoing a right-sided carotid endarterectomy. SSEP data confirmed right cortical pathology and excluded a technical rationale for absent motor evoked responses. Attempts at generating left-hand (contralateral) TcMEP from right cortical anodal stimulation failed despite high stimulus intensities. However, TcMEP responses from anodal stimulation of the right cortex were recorded from the right-hand (ipsilateral) which were attributed to \"crossover.\" Ipsilateral TcMEP onset latencies derived from the stimulus-response data supports the idea that crossover is a product of cathodal stimulation initially acting on pericortical motor pathways.</p>","PeriodicalId":22816,"journal":{"name":"The Neurodiagnostic Journal","volume":"63 2","pages":"149-155"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9636238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"<b>Kathleen Mears Memorial Lecture:</b> Telehealth - \"This Is the Way\".","authors":"Ryan R Lau","doi":"10.1080/21646821.2023.2210060","DOIUrl":"https://doi.org/10.1080/21646821.2023.2210060","url":null,"abstract":"I was surprised to be contacted last year by Linda Kelly to invite me to give the Kathleen Mears Memorial Lecture at the 2022 ASET meeting in Louisville, KY! I thought to myself, am I really that old or accomplished?! I did not initially think so; however, she felt my experience in telehealth would be of great education and benefit to ASET and the neurodiagnostic community, given the historic circumstances that occurred on March 11th, 2020. In case you forgot, that day changed everything. It was the day that the World Health Organization (WHO) declared that COVID-19 could be characterized as a pandemic (WHO 2020). Strangely, you may ask yourself, has it really been that long? Has it been over three years now that we remain in this pandemic? Yes! The reality is that what we lived and continue to endure is something out of a movie. We wore (and some continue to wear) N95 masks, dealt with toilet paper shortages, sweatpants living, and full-blown hospital and house lockups! Let me digress back to the importance of this article. I am truly humbled to be bestowed with the honor and privilege to present this lecture and write this article.","PeriodicalId":22816,"journal":{"name":"The Neurodiagnostic Journal","volume":"63 2","pages":"131-148"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9862127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Neonate, Infant, Childhood, and Adolescent Epilepsy Syndromes.","authors":"Walt Banoczi","doi":"10.1080/21646821.2023.2172951","DOIUrl":"https://doi.org/10.1080/21646821.2023.2172951","url":null,"abstract":"<p><p>Epilepsy syndromes are defined either by a specific set of symptoms or by the area of the brain where the seizures originate. Some of the symptoms include types of seizures and age of seizure onset. Other symptoms include the frequency and severity of the seizures and the time of day in which they occur. Epilepsy syndromes are likely to be present at birth or appear during childhood. The treatment for childhood epilepsy syndromes may include medication, diet therapy, nerve stimulation, or surgery.</p>","PeriodicalId":22816,"journal":{"name":"The Neurodiagnostic Journal","volume":"63 1","pages":"58-93"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9269412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Technical Tips: Advocacy: A Cornerstone of Advancing the Interests of the Profession.","authors":"Jennifer Montgomery","doi":"10.1080/21646821.2023.2183013","DOIUrl":"https://doi.org/10.1080/21646821.2023.2183013","url":null,"abstract":"<p><p>Advocacy should be thought of as a permanent part of recognition efforts during Neurodiagnostic Week (April 16-22, 2023) for Neurodiagnostic professionals. It is the perfect opportunity to engage in advocacy and educate others on the importance of using well qualified Neurodiagnostic Technologists to perform neurodiagnostic procedures. Why is advocacy important? Because there is strength in numbers and constituent voices matter. If Neurodiagnostic Technologists do not advocate for the profession and educate decision makers, legislators, and the public about the importance of professional competency in Neurodiagnostics, no one else will. Advocacy works and is a critical part of moving the profession forward to ensure that lawmakers and policy understand that those performing the procedures should be the best qualified professionals to do so.</p>","PeriodicalId":22816,"journal":{"name":"The Neurodiagnostic Journal","volume":"63 1","pages":"94-101"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9318005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}