Early Action Error Processing Is Due to Domain-General Surprise, Whereas Later Processing Is Error Specific

AI SummaryThe ability to adapt behavior after making mistakes is an important aspect of cognitive control. Recent research challenges the idea that slowing down after errors is adaptive, suggesting it may be a result of the surprising nature of errors. This study used EEG decoding to examine whether there are unique error-specific processes that contribute… Continue reading Early Action Error Processing Is Due to Domain-General Surprise, Whereas Later Processing Is Error Specific

Rapid Processing of Observed Touch through Social Perceptual Brain Regions: An EEG-fMRI Fusion Study

Seeing social touch triggers a strong social-affective response that involves multiple brain networks, including visual, social perceptual, and somatosensory systems. Previous studies have identified the specific functional role of each system, but little is known about the speed and directionality of the information flow. Is this information extracted via the social perceptual system or from… Continue reading Rapid Processing of Observed Touch through Social Perceptual Brain Regions: An EEG-fMRI Fusion Study

Tuned to Tremor: Increased Sensitivity of Cortico-Basal Ganglia Neurons to Tremor Frequency in the MPTP Nonhuman Primate Model of Parkinson’s Disease

AI SummaryRest tremor in Parkinson’s disease may be caused by a resonance phenomenon in the brain. The study found that cortico-basal ganglia neurons become more sensitive to tremor frequency in the parkinsonian state. This suggests that these neurons not only switch on tremor but also play a role in setting its frequency.Rest tremor is one… Continue reading Tuned to Tremor: Increased Sensitivity of Cortico-Basal Ganglia Neurons to Tremor Frequency in the MPTP Nonhuman Primate Model of Parkinson’s Disease

Epidemiologic Trends of Amyotrophic Lateral Sclerosis in Ireland, 1996-2021

AI SummaryThe study examined changes in the incidence, prevalence, age at onset, and survival of patients with ALS in Ireland over 25 years. The incidence, prevalence, and age at onset of ALS have all increased, while survival rates have not changed.Background and Objectives The objective of this study was to examine changes to the incidence,… Continue reading Epidemiologic Trends of Amyotrophic Lateral Sclerosis in Ireland, 1996-2021

Movement Disorders in Patients With Genetic Developmental and Epileptic Encephalopathies

Background and Objectives Movement disorders (MDs) are underrecognized in the developmental and epileptic encephalopathies (DEEs). There are now more than 800 genes implicated in causing the DEEs; relatively few of these rare genetic diseases are known to be associated with MDs. We identified patients with genetic DEEs who had MDs, classified the nature of their… Continue reading Movement Disorders in Patients With Genetic Developmental and Epileptic Encephalopathies

Treatable Sydenham Chorea in a 76-Year-Old Woman

AI SummaryA 76-year-old woman with asymmetric chorea and no brain lesions has an increased striatal metabolism. She has an elevated anti-streptolysin O titer, indicating a possible Sydenham chorea. Treatment with clarithromycin and immunomodulatory medication improves her movement disorder.A 76-year-old woman presented with asymmetric chorea (Video 1) that has evolved within the past 6 weeks before… Continue reading Treatable Sydenham Chorea in a 76-Year-Old Woman