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Chronic Intraventricular Cannulation for the Study of Glymphatic Transport. 慢性脑室内插管对淋巴运输的研究。
IF 2.7 3区 医学
eNeuro Pub Date : 2025-06-18 Print Date: 2025-06-01 DOI: 10.1523/ENEURO.0537-24.2025
Daniel Gahn-Martinez, Michael Giannetto, Ethan Chang, Nathaniel Beam, Paul Tobin, Virginia Plá, Maiken Nedergaard
{"title":"Chronic Intraventricular Cannulation for the Study of Glymphatic Transport.","authors":"Daniel Gahn-Martinez, Michael Giannetto, Ethan Chang, Nathaniel Beam, Paul Tobin, Virginia Plá, Maiken Nedergaard","doi":"10.1523/ENEURO.0537-24.2025","DOIUrl":"10.1523/ENEURO.0537-24.2025","url":null,"abstract":"<p><p>Glymphatic transport in rodents has primarily been studied using cisterna magna cannulation (CMC), a minimally invasive method for cerebrospinal fluid (CSF) tracers infusion. However, CMC is suboptimal due to the lack of bony structures to stabilize the cannula, leading to potential movement artifacts. Here, we present an alternative approach involving chronic cannulation of the lateral ventricles of mice for CSF tracer delivery. A direct comparison demonstrated that intraventricular cannulation (IVC) reproduces CMC results in vivo, including perivascular labeling of the middle cerebral artery, which was further confirmed by ex vivo analysis. IVC enables tracer infusion in awake mice, facilitating glymphatic transport studies in conjunction with behavioral assessments that were previously unattainable. Additionally, IVC supports repeated infusions in awake animals, offering the potential to reduce the number of experimental animals required. This study establishes IVC as a robust alternative for studying glymphatic transport and associated physiological processes.</p>","PeriodicalId":11617,"journal":{"name":"eNeuro","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12176260/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144207929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Visual Stimulation Under 4 Hz, Not at 10 Hz, Generates the Highest-Amplitude Frequency-Tagged Responses of the Human Brain: Understanding the Effect of Stimulation Frequency. 4赫兹以下的视觉刺激,而不是10赫兹,产生人脑最高振幅的频率标记反应:了解刺激频率的影响。
IF 2.7 3区 医学
eNeuro Pub Date : 2025-06-17 Print Date: 2025-06-01 DOI: 10.1523/ENEURO.0426-24.2025
Talia L Retter, Christine Schiltz
{"title":"Visual Stimulation Under 4 Hz, Not at 10 Hz, Generates the Highest-Amplitude Frequency-Tagged Responses of the Human Brain: Understanding the Effect of Stimulation Frequency.","authors":"Talia L Retter, Christine Schiltz","doi":"10.1523/ENEURO.0426-24.2025","DOIUrl":"10.1523/ENEURO.0426-24.2025","url":null,"abstract":"<p><p>In frequency tagging, visual stimulation at a frequency (F) of ∼10 Hz has long been known to generate the highest-amplitude response at <i>F</i> in the frequency domain over the human occipital cortex with electroencephalogram and other high temporal-resolution methods. Brain responses are indeed commonly assessed simply at <i>F</i> (i.e., the first harmonic = 1<i>F</i>), under the assumption that the response is represented at a single frequency, i.e., \"steady-state\" or approximately sinusoidal in terms of amplitude over time. This condition is met at stimulus presentation frequencies above ∼4-8 Hz in the visual modality; consequently, frequency tagging has often been limited to F above this \"floor.\" Here, we support a less-common perspective, that frequency-tagged responses do not need to be steady-state, such that slower F are valid. In this case, it has been shown that is not appropriate to measure nonsinusoidal responses at only <i>F</i> but that nonsinusoidal responses can still be analyzed simply and advantageously in the frequency domain through baseline-corrected amplitude summation across harmonics (<i>F</i>  <i>+</i> 2<i>F</i>  <i>+</i> 3<i>F</i>… = <i>F</i> <sub>s</sub>). Critically, we demonstrate that although the highest-amplitude <i>F</i> response occurs at F = 10 Hz, the highest-amplitude <i>F</i> <sub>s</sub> response occurs at approximately F < 4 Hz. We use this example toward understanding the effect of stimulation frequency on response amplitude and discuss its caveats and limitations. We address what defines an \"optimal\" stimulation frequency (note: it may not always be the F yielding the highest-amplitude response) and reflect on considerations when choosing a stimulation frequency in different contexts.</p>","PeriodicalId":11617,"journal":{"name":"eNeuro","volume":"12 6","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12177708/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144316207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Combinatorial Approaches to Restore Corticospinal Function after Spinal Cord Injury. 脊髓损伤后皮质脊髓功能恢复的组合方法。
IF 2.7 3区 医学
eNeuro Pub Date : 2025-06-17 Print Date: 2025-06-01 DOI: 10.1523/ENEURO.0185-25.2025
Najet Serradj, Edmund Hollis
{"title":"Combinatorial Approaches to Restore Corticospinal Function after Spinal Cord Injury.","authors":"Najet Serradj, Edmund Hollis","doi":"10.1523/ENEURO.0185-25.2025","DOIUrl":"10.1523/ENEURO.0185-25.2025","url":null,"abstract":"","PeriodicalId":11617,"journal":{"name":"eNeuro","volume":"12 6","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12177706/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144316206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Incorporating Quantitative Literacy into a T32 Retreat: Lessons and Considerations from Experience. 将定量素养纳入T32静修:经验教训与思考。
IF 2.7 3区 医学
eNeuro Pub Date : 2025-06-12 Print Date: 2025-06-01 DOI: 10.1523/ENEURO.0027-25.2025
Adam A Hall, Jenna R McGrath
{"title":"Incorporating Quantitative Literacy into a T32 Retreat: Lessons and Considerations from Experience.","authors":"Adam A Hall, Jenna R McGrath","doi":"10.1523/ENEURO.0027-25.2025","DOIUrl":"10.1523/ENEURO.0027-25.2025","url":null,"abstract":"<p><p>Regardless of discipline, quantitative literacy is a critical component of any scientist's skill set. A recent push from the NINDS has focused on enhancing and maintaining this expertise in trainees to enhance scientific fluency and to combat the reproducibility crisis. T32-funded programs often include off-campus retreats, providing opportunities to integrate a quantitative literacy component, or thematic focus. Here we will discuss the lessons and considerations learned from organizing a retreat focused on quantitative aspects of diagnostics for spinal cord injury. Survey results regarding retreat events and workshops reveal elements that were perceived to be successful by attendees. Events developed with active learning that focused on collaborative problem-solving and cross-discipline quantitative measures were well received by trainees. On the other hand, lectures and panel discussions were found to be less effective in boosting long-lasting improvements in quantitative literacy. Taken as a whole, these experiences from incorporating quantitative literacy into a T32 retreat offer strategies to consider when designing coursework or events focusing on this topic.</p>","PeriodicalId":11617,"journal":{"name":"eNeuro","volume":"12 6","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12177703/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144283014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Demyelination Produces a Shift in the Population of Cortical Neurons That Synapse with Callosal Oligodendrocyte Progenitor Cells. 脱髓鞘产生皮层神经元群体的转移,这些神经元与胼胝体少突胶质祖细胞突触。
IF 2.7 3区 医学
eNeuro Pub Date : 2025-06-12 Print Date: 2025-06-01 DOI: 10.1523/ENEURO.0113-25.2025
Benjamin S Summers, Catherine A Blizzard, Raphael R Ricci, Kimberley A Pitman, Bowen Dempsey, Simon McMullan, Brad A Sutherland, Kaylene M Young, Carlie L Cullen
{"title":"Demyelination Produces a Shift in the Population of Cortical Neurons That Synapse with Callosal Oligodendrocyte Progenitor Cells.","authors":"Benjamin S Summers, Catherine A Blizzard, Raphael R Ricci, Kimberley A Pitman, Bowen Dempsey, Simon McMullan, Brad A Sutherland, Kaylene M Young, Carlie L Cullen","doi":"10.1523/ENEURO.0113-25.2025","DOIUrl":"10.1523/ENEURO.0113-25.2025","url":null,"abstract":"<p><p>Oligodendrocyte progenitor cells (OPCs) receive synaptic input from a diverse range of neurons in the developing and adult brain. Understanding whether the neuronal populations that synapse with OPCs in the healthy brain is altered by demyelination and/or remyelination may support the advancement of neuroprotective or myelin repair strategies being developed for demyelinating diseases such as multiple sclerosis. To explore this possibility, we employed cre-lox transgenic technology to facilitate the infection of OPCs by a modified rabies virus, enabling the retrograde monosynaptic tracing of neuron→OPC connectivity. In the healthy adult mouse, OPCs in the corpus callosum primarily received synaptic input from ipsilateral cortical neurons. Of the cortical neurons, ∼50% were layer V pyramidal cells. Cuprizone demyelination reduced the total number of labeled neurons. However, the frequency/kinetics of mini-excitatory postsynaptic currents recorded from OPCs appeared preserved. Of particular interest, demyelination increased the number of labeled layer II/III pyramidal neurons and also increased at the expense of layer V pyramidal neurons, a change that was largely ameliorated by remyelination. These data suggest that in the healthy adult mouse brain, callosal OPCs primarily receive synaptic input from cortical layer V pyramidal neurons. However, callosal demyelination is associated with a population switch and OPCs equally synapse with layer II/III and V pyramidal neurons to synapse with OPCs, until myelin is restored.</p>","PeriodicalId":11617,"journal":{"name":"eNeuro","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12177707/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143978691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experience-Dependent Neuroplasticity in the Hippocampus of Bilingual Young Adults. 双语青年海马的经验依赖神经可塑性。
IF 2.7 3区 医学
eNeuro Pub Date : 2025-06-11 Print Date: 2025-06-01 DOI: 10.1523/ENEURO.0128-25.2025
Federico Gallo, Toms Voits, Jason Rothman, Jubin Abutalebi, Yury Shtyrov, Andriy Myachykov
{"title":"Experience-Dependent Neuroplasticity in the Hippocampus of Bilingual Young Adults.","authors":"Federico Gallo, Toms Voits, Jason Rothman, Jubin Abutalebi, Yury Shtyrov, Andriy Myachykov","doi":"10.1523/ENEURO.0128-25.2025","DOIUrl":"10.1523/ENEURO.0128-25.2025","url":null,"abstract":"<p><p>Models of experience-dependent neuroplasticity predict that the acquisition and extensive use of a new skill trigger a nonlinear trajectory of neurostructural modifications, where initial expansion of relevant brain areas subsequently (once the skill is acquired) gives way to volumetric renormalization. Such predictions also apply in the domain of language during learning and/or simultaneous management of two (or more) linguistic systems. In a sample of 69 young adult Russian-English bilinguals, we tested the hypothesis that individual differences in bilingual engagement nonlinearly correlate with normalized volume of the hippocampus-a key learning-related brain region particularly amenable to experience-dependent plasticity. Results revealed an inverted U-shape association between second language engagement and left hippocampal gray matter volume. The present results replicate and expand the findings from aging populations, showing a nonlinear pattern of structural hippocampal plasticity in healthy young adults. These findings support the role of bilingualism as a promoter of experience-dependent neuroplasticity.</p>","PeriodicalId":11617,"journal":{"name":"eNeuro","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12177704/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tolerance in Thalamic Paraventricular Nucleus Neurons Following Chronic Treatment of Animals with Morphine. 慢性吗啡治疗动物丘脑室旁核神经元的耐受性。
IF 2.7 3区 医学
eNeuro Pub Date : 2025-06-11 Print Date: 2025-06-01 DOI: 10.1523/ENEURO.0249-24.2025
Omar Koita, Joseph J Lebowitz, John T Williams
{"title":"Tolerance in Thalamic Paraventricular Nucleus Neurons Following Chronic Treatment of Animals with Morphine.","authors":"Omar Koita, Joseph J Lebowitz, John T Williams","doi":"10.1523/ENEURO.0249-24.2025","DOIUrl":"10.1523/ENEURO.0249-24.2025","url":null,"abstract":"<p><p>Neurons in the paraventricular nucleus of the thalamus (PVT) integrate visceral and limbic inputs and project to multiple brain regions to bias behavior toward aversive or defensive states. This study examines MOR signaling in anterior PVT neurons in brain slices from untreated and morphine-treated animals. Imaging in a MOR-Cre reporter rat revealed extensive expression in aPVT cells, and the application of [Met]<sup>5-</sup> enkephalin (ME) induced outward currents which were abolished by the MOR-selective antagonist CTAP. A saturating concentration of ME resulted in desensitization that was blocked by compound 101, indicating a phosphorylation-dependent process. The opioid sensitivity of amygdala-, nucleus accumbens-, and prefrontal cortex-projecting neurons was then examined. Neurons that projected to the amygdala were more sensitive to ME than cortical- and accumbal-projecting cells. Following chronic treatment, tolerance to morphine was found in neurons projecting to the amygdala and nucleus accumbens with a trend toward tolerance observed in neurons projecting to the prefrontal cortex. The results reveal that adaptations to chronic opioid exposure are in the aPVT circuits contribute to affective pain processing and may provide specific insights into the etiology of withdrawal following the cessation of opioid use.</p>","PeriodicalId":11617,"journal":{"name":"eNeuro","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12177709/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144207933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two-Dimensional Perisaccadic Visual Mislocalization in Rhesus Macaque Monkeys. 恒河猴二维眼周视觉定位错误。
IF 2.7 3区 医学
eNeuro Pub Date : 2025-06-06 Print Date: 2025-06-01 DOI: 10.1523/ENEURO.0547-24.2025
Matthias P Baumann, Ziad M Hafed
{"title":"Two-Dimensional Perisaccadic Visual Mislocalization in Rhesus Macaque Monkeys.","authors":"Matthias P Baumann, Ziad M Hafed","doi":"10.1523/ENEURO.0547-24.2025","DOIUrl":"10.1523/ENEURO.0547-24.2025","url":null,"abstract":"<p><p>Perceptual localization of brief, high-contrast perisaccadic visual probes is grossly erroneous. While this phenomenon has been extensively studied in humans, more needs to be learned about its underlying neural mechanisms. This ideally requires running similar behavioral paradigms in animals. However, during neurophysiology, neurons encountered in the relevant sensory and sensory-motor brain areas for visual mislocalization can have arbitrary, noncardinal response field locations. This necessitates using mislocalization paradigms that can work with any saccade direction. Here, we first established such a paradigm in three male rhesus macaque monkeys. In every trial, the monkeys generated a saccade toward an eccentric target. Once a saccade onset was detected, we presented a brief flash at one of three possible locations ahead of the saccade target location. After an experimentally imposed delay, we removed the saccade target, and the monkeys were then required to generate a memory-guided saccade toward the remembered flash location. All three monkeys readily learned the task, and, like humans, they all showed strong backward mislocalization toward the saccade target, which recovered for later flashes from the saccade time. Importantly, we then replicated a known property of human perisaccadic mislocalization, as revealed by two-dimensional mislocalization paradigms: that mislocalization is the strongest for upward saccades. For horizontal saccades, we additionally found stronger mislocalization for upper visual field flashes, again consistent with humans. Our results establish a robust two-dimensional mislocalization paradigm in monkeys, and they pave the way for exploring the neural mechanisms underlying the dependence of perisaccadic mislocalization strength on saccade direction.</p>","PeriodicalId":11617,"journal":{"name":"eNeuro","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12143751/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144119250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rod Inputs Arrive at Horizontal Cell Somas in Mouse Retina Solely via Rod-Cone Coupling. 视杆输入仅通过视杆-视锥耦合到达小鼠视网膜水平细胞体。
IF 2.7 3区 医学
eNeuro Pub Date : 2025-06-06 Print Date: 2025-06-01 DOI: 10.1523/ENEURO.0427-24.2025
Wallace B Thoreson, Asia L Sladek, Cody L Barta, Lou E Townsend
{"title":"Rod Inputs Arrive at Horizontal Cell Somas in Mouse Retina Solely via Rod-Cone Coupling.","authors":"Wallace B Thoreson, Asia L Sladek, Cody L Barta, Lou E Townsend","doi":"10.1523/ENEURO.0427-24.2025","DOIUrl":"10.1523/ENEURO.0427-24.2025","url":null,"abstract":"<p><p>Rod and cone photoreceptor cells selectively contact different compartments of axon-bearing retinal horizontal cells in the mammalian retina. Cones synapse exclusively on the soma whereas rods synapse exclusively on a large axon terminal compartment. The possibility that rod signals can travel down the axon from terminal to soma has been proposed as a means of producing spectrally opponent interactions between rods and cones, but there is conflicting data about whether this actually occurs. The spectral overlap between rods and cones in mouse makes it difficult to stimulate rod and cone pigments separately. We therefore used optogenetic techniques to analyze photoreceptor inputs into horizontal somas by selectively expressing channelrhodopsin in rods and/or cones. Optogenetic stimulation of rods and cones both evoked large fast inward currents in horizontal cell somas. Cone-driven responses were abolished by eliminating synaptic release in a cone-specific knock-out of the exocytotic calcium sensor, synaptotagmin 1 (Syt1). However, rod-driven responses in horizontal somas were unchanged after eliminating synaptic release from rods but abolished by eliminating release from both rods and cones. This suggests that release from cones is required for transmission of rod signals to horizontal cell somas. Rods and cones are coupled by Cx36 gap junctions, and we found that selective elimination of Cx36 from rods also abolished rod-driven optogenetic responses in horizontal cell somas. Together, these results show that rod signals reach the somas of B-type horizontal cells exclusively via gap junctions with cones and not by transmission down the axon from the axon terminal.</p>","PeriodicalId":11617,"journal":{"name":"eNeuro","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12143749/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144157372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Automatic Domain-General Error Signal Is Shared across Tasks and Predicts Confidence in Different Sensory Modalities. 自动域通用误差信号在任务之间共享,并预测不同感官模式的置信度。
IF 2.7 3区 医学
eNeuro Pub Date : 2025-06-06 Print Date: 2025-06-01 DOI: 10.1523/ENEURO.0124-25.2025
Matthew J Davidson, Sriraj Aiyer, Nick Yeung
{"title":"An Automatic Domain-General Error Signal Is Shared across Tasks and Predicts Confidence in Different Sensory Modalities.","authors":"Matthew J Davidson, Sriraj Aiyer, Nick Yeung","doi":"10.1523/ENEURO.0124-25.2025","DOIUrl":"10.1523/ENEURO.0124-25.2025","url":null,"abstract":"<p><p>Understanding the ability to self-evaluate decisions is an active area of research. This research has primarily focused on the neural correlates of self-evaluation during visual tasks and whether neural correlates before or after the primary decision contribute to self-reported confidence. This focus has been useful, yet the reliance on subjective confidence reports may confound our understanding of key everyday features of metacognitive self-evaluation: that decisions must be rapidly evaluated without explicit feedback and unfold in a multisensory world. These considerations led us to hypothesize that an automatic domain-general metacognitive signal may be shared between sensory modalities, which we tested in the present study with multivariate decoding of electroencephalographic (EEG) data. Participants (<i>N</i> = 21, 12 female) first performed a visual task with no request for self-evaluations of performance, prior to an auditory task that included rating decision confidence on each trial. A multivariate classifier trained to predict errors in the speeded visual task generalized to distinguish correct and error trials in the subsequent nonspeeded auditory discrimination. This generalization did not occur for classifiers trained on the visual stimulus-locked data and further predicted subjective confidence on the subsequent auditory task. This evidence of overlapping post-response neural activity provides evidence for automatic encoding of confidence independent of any explicit request for metacognitive reports and a shared basis for metacognitive evaluations across sensory modalities.</p>","PeriodicalId":11617,"journal":{"name":"eNeuro","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12143750/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144127024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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