Experimental Brain Research最新文献

筛选
英文 中文
Evidence of bottom-up homeostatic modulation induced taVNS during emotional and Go/No-Go tasks. 在情绪和去/不去任务中,自下而上的稳态调节诱导了 taVNS 的证据。
IF 1.7 4区 医学
Experimental Brain Research Pub Date : 2024-09-01 Epub Date: 2024-07-04 DOI: 10.1007/s00221-024-06876-x
Lucas Camargo, Kevin Pacheco-Barrios, Anna Carolyna Gianlorenço, Maryela Menacho, Hyuk Choi, Jae-Jun Song, Felipe Fregni
{"title":"Evidence of bottom-up homeostatic modulation induced taVNS during emotional and Go/No-Go tasks.","authors":"Lucas Camargo, Kevin Pacheco-Barrios, Anna Carolyna Gianlorenço, Maryela Menacho, Hyuk Choi, Jae-Jun Song, Felipe Fregni","doi":"10.1007/s00221-024-06876-x","DOIUrl":"10.1007/s00221-024-06876-x","url":null,"abstract":"<p><p>Bilateral transcutaneous auricular vagus nerve stimulation (taVNS) - a non-invasive neuromodulation technique - has been investigated as a safe and feasible technique to treat many neuropsychiatric conditions. such as epilepsy, depression, anxiety, and chronic pain. Our aim is to investigate the effect of taVNS on neurophysiological processes during emotional and Go/No-Go tasks, and changes in frontal alpha asymmetry. We performed a randomized, double-blind, sham-controlled trial with 44 healthy individuals who were allocated into two groups (the active taVNS group and the sham taVNS group). Subjects received one session of taVNS (active or sham) for 60 min. QEEG was recorded before and after the interventions, and the subjects were assessed while exposed to emotional conditions with sad and happy facial expressions, followed by a Go/No-Go trial. The results demonstrated a significant increase in N2 amplitude in the No-Go condition for the active taVNS post-intervention compared to the sham taVNS after adjusting by handedness, mood, and fatigue levels (p = 0.046), significantly reduced ERD during sad conditions after treatment (p = 0.037), and increased frontal alpha asymmetry towards the right frontal hemisphere during the emotional task condition (p = 0.046). Finally, we observed an interesting neural signature in this study that suggests a bottom-up modulation from brainstem/subcortical to cortical areas as characterized by improved lateralization of alpha oscillations towards the frontal right hemisphere, and changes in ERP during emotional and Go/No-Go tasks that suggests a better subcortical response to the tasks. Such bottom-up effects may mediate some of the clinical effects of taVNS.</p>","PeriodicalId":12268,"journal":{"name":"Experimental Brain Research","volume":" ","pages":"2069-2081"},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141497587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction: Unveiling the invisible: receivers use object weight cues for grip force planning in handover actions. 更正:揭开隐形的面纱:接收器在交接动作中利用物体重量线索进行握力规划。
IF 1.7 4区 医学
Experimental Brain Research Pub Date : 2024-09-01 Epub Date: 2024-07-12 DOI: 10.1007/s00221-024-06835-6
L Kopnarski, J Rudisch, D F Kutz, C Voelcker-Rehage
{"title":"Correction: Unveiling the invisible: receivers use object weight cues for grip force planning in handover actions.","authors":"L Kopnarski, J Rudisch, D F Kutz, C Voelcker-Rehage","doi":"10.1007/s00221-024-06835-6","DOIUrl":"10.1007/s00221-024-06835-6","url":null,"abstract":"","PeriodicalId":12268,"journal":{"name":"Experimental Brain Research","volume":" ","pages":"2279-2280"},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11306498/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141590073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Effects of early monocular enucleation on cortical spreading depression in well-nourished and malnourished adult rats. 早期单眼去核对营养良好和营养不良成年大鼠皮层扩散抑制的影响
IF 1.7 4区 医学
Experimental Brain Research Pub Date : 2024-09-01 Epub Date: 2024-07-22 DOI: 10.1007/s00221-024-06893-w
Rubem Carlos Araujo Guedes, Jailma Santos Monteiro, Silvio de Biase, Ana Paula Rocha de Melo, Juliana Maria Carrazzone Borba, Cristovam Wanderley Picanço Diniz, Arthur Gabriel Alves Furtado de Carvalho Noya, Sonia Carolina Guerrero Prieto
{"title":"Effects of early monocular enucleation on cortical spreading depression in well-nourished and malnourished adult rats.","authors":"Rubem Carlos Araujo Guedes, Jailma Santos Monteiro, Silvio de Biase, Ana Paula Rocha de Melo, Juliana Maria Carrazzone Borba, Cristovam Wanderley Picanço Diniz, Arthur Gabriel Alves Furtado de Carvalho Noya, Sonia Carolina Guerrero Prieto","doi":"10.1007/s00221-024-06893-w","DOIUrl":"10.1007/s00221-024-06893-w","url":null,"abstract":"<p><p>Sensory development is a complex process that can influence physiological and pathological factors. In laterally-eyed mammals, monocular enucleation (ME) during development and the subsequent lack of external sensory stimuli can result in permanent morphological and physiological changes. Malnutrition, especially in early life, also can cause permanent morphofunctional changes due to inadequate nutrient intake in both hemispheres. This study investigated the effects of early (postnatal day 7) ME and malnutrition during the suckling period on cortical excitability in adulthood (110-140 days of life). For this, we compared the speed propagation of cortical spreading depression in the occipital and parietal cortex of malnourished and well-nourished adult rats, previously suckled small-sized litters with three pups (L3/dam) medium-sized litters with six pups (L6/dam), and large-sized litters with twelve pups (L12/dam). The CSD velocity was augmented by the ME in the contralateral side of the removed eye in the parietal and occipital cortex. These findings suggest that visual sensory input deprivation is associated with permanent functional changes in the visual pathways, which can alter cortical excitability and lead to modifications in CSD propagation.</p>","PeriodicalId":12268,"journal":{"name":"Experimental Brain Research","volume":" ","pages":"2241-2247"},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141733913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aquaporin 4 and the endocannabinoid system: a potential therapeutic target in brain injury. 水蒸发素 4 和内源性大麻素系统:脑损伤的潜在治疗靶点。
IF 1.7 4区 医学
Experimental Brain Research Pub Date : 2024-09-01 Epub Date: 2024-07-23 DOI: 10.1007/s00221-024-06896-7
Ari Misael Martínez-Torres, Julio Morán
{"title":"Aquaporin 4 and the endocannabinoid system: a potential therapeutic target in brain injury.","authors":"Ari Misael Martínez-Torres, Julio Morán","doi":"10.1007/s00221-024-06896-7","DOIUrl":"10.1007/s00221-024-06896-7","url":null,"abstract":"<p><p>Brain edema is a critical complication arising from stroke and traumatic brain injury (TBI) with an important impact on patient recovery and can lead to long-term consequences. Therapeutic options to reduce edema progression are limited with variable patient outcomes. Aquaporin 4 (AQP4) is a water channel that allows bidirectional water diffusion across the astrocyte membrane and participates in the distinct phases of cerebral edema. The absence or inhibition of this channel has been demonstrated to ameliorate edema and brain damage. The endocannabinoid system (ECS) is a neuromodulator system with a wide expression in the brain and its activation has shown neuroprotective properties in diverse models of neuronal damage. This review describes and discusses the major features of ECS and AQP4 and their role during brain damage, observing that ECS stimulation reduces edema and injury size in diverse models of brain damage, however, the relationship between AQP4 expression and dynamics and ECS activation remains unclear. The research on these topics holds promising therapeutic implications for the treatment of brain edema following stroke and TBI.</p>","PeriodicalId":12268,"journal":{"name":"Experimental Brain Research","volume":" ","pages":"2041-2058"},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11306651/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141753809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
HD-tDCS to the lateral occipital complex improves haptic object recognition. 外侧枕复合体的 HD-tDCS 可提高触觉物体识别能力。
IF 1.7 4区 医学
Experimental Brain Research Pub Date : 2024-09-01 Epub Date: 2024-07-06 DOI: 10.1007/s00221-024-06888-7
Laura Cacciamani, Daniel Tomer, Mary Grace Mylod-Vargas, Aaron Selcov, Grace A Peterson, Christopher I Oseguera, Aidan Barbieux
{"title":"HD-tDCS to the lateral occipital complex improves haptic object recognition.","authors":"Laura Cacciamani, Daniel Tomer, Mary Grace Mylod-Vargas, Aaron Selcov, Grace A Peterson, Christopher I Oseguera, Aidan Barbieux","doi":"10.1007/s00221-024-06888-7","DOIUrl":"10.1007/s00221-024-06888-7","url":null,"abstract":"<p><p>High-definition transcranial direct current stimulation (HD-tDCS) is a non-invasive brain stimulation technique that has been shown to be safe and effective in modulating neuronal activity. The present study investigates the effect of anodal HD-tDCS on haptic object perception and memory through stimulation of the lateral occipital complex (LOC), a structure that has been shown to be involved in both visual and haptic object recognition. In this single-blind, sham-controlled, between-subjects study, blindfolded healthy, sighted participants used their right (dominant) hand to perform haptic discrimination and recognition tasks with 3D-printed, novel objects called \"Greebles\" while receiving 20 min of 2 milliamp (mA) anodal stimulation (or sham) to the left or right LOC. Compared to sham, those who received left LOC stimulation (contralateral to the hand used) showed an improvement in haptic object recognition but not discrimination-a finding that was evident from the start of the behavioral tasks. A second experiment showed that this effect was not observed with right LOC stimulation (ipsilateral to the hand used). These results suggest that HD-tDCS to the left LOC can improve recognition of objects perceived via touch. Overall, this work sheds light on the LOC as a multimodal structure that plays a key role in object recognition in both the visual and haptic modalities.</p>","PeriodicalId":12268,"journal":{"name":"Experimental Brain Research","volume":" ","pages":"2113-2124"},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141544676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling kinematic variability reveals displacement and velocity based dual control of saccadic eye movements. 运动学变异建模揭示了基于位移和速度的眼球移动双重控制。
IF 1.7 4区 医学
Experimental Brain Research Pub Date : 2024-09-01 Epub Date: 2024-07-09 DOI: 10.1007/s00221-024-06870-3
Varsha Vasudevan, Aditya Murthy, Radhakant Padhi
{"title":"Modeling kinematic variability reveals displacement and velocity based dual control of saccadic eye movements.","authors":"Varsha Vasudevan, Aditya Murthy, Radhakant Padhi","doi":"10.1007/s00221-024-06870-3","DOIUrl":"10.1007/s00221-024-06870-3","url":null,"abstract":"<p><p>Noise is a ubiquitous component of motor systems that leads to behavioral variability of all types of movements. Nonetheless, systems-based models investigating human movements are generally deterministic and explain only the central tendencies like mean trajectories. In this paper, a novel approach to modeling kinematic variability of movements is presented and tested on the oculomotor system. This approach reconciles the two prominent philosophies of saccade control: displacement-based control versus velocity-based control. This was achieved by quantifying the variability in saccadic eye movements and developing a stochastic model of its control. The proposed stochastic dual model generated significantly better fits of inter-trial variances of the saccade trajectories compared to existing models. These results suggest that the saccadic system can flexibly use the information of both desired displacement and velocity for its control. This study presents a potential framework for investigating computational principles of motor control in the presence of noise utilizing stochastic modeling of kinematic variability.</p>","PeriodicalId":12268,"journal":{"name":"Experimental Brain Research","volume":" ","pages":"2159-2176"},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141558488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corticospinal excitability at rest outside of a task does not differ from task intertrial intervals in healthy adults. 在健康成年人中,任务外静息时的皮层脊髓兴奋性与任务间歇时的皮层脊髓兴奋性并无差异。
IF 1.7 4区 医学
Experimental Brain Research Pub Date : 2024-09-01 Epub Date: 2024-07-24 DOI: 10.1007/s00221-024-06895-8
Kate Bakken, Chris Horton, Mitchell Fisher, Corey G Wadsley, Ian Greenhouse
{"title":"Corticospinal excitability at rest outside of a task does not differ from task intertrial intervals in healthy adults.","authors":"Kate Bakken, Chris Horton, Mitchell Fisher, Corey G Wadsley, Ian Greenhouse","doi":"10.1007/s00221-024-06895-8","DOIUrl":"10.1007/s00221-024-06895-8","url":null,"abstract":"<p><p>Human corticospinal excitability (CSE) modulates during movement, when muscles are active, but also at rest, when muscles are not active. These changes in resting motor system excitability can be transient or longer lasting. Evidence from transcranial magnetic stimulation (TMS) studies suggests even relatively short periods of motor learning on the order of minutes can have lasting effects on resting CSE. Whether individuals are able to return CSE to out-of-task resting levels during the intertrial intervals (ITI) of behavioral tasks that do not include an intended motor learning component is an important question. Here, in twenty-five healthy young adults, we used single-pulse TMS and electromyography (EMG) to measure motor evoked potentials (MEPs) during two different resting contexts: (1) prior to engaging in the response task during which participants were instructed only to rest (out-of-task), and (2) ITI of a choice-reaction time task (in-task). In both contexts, five TMS intensities were used to evaluate possible differences in recruitment of corticospinal (CS) output across a range of inputs. We hypothesized resting state CSE would be greater during ITI than out-of-task rest, reflected in larger MEP amplitudes. Contrary to our hypothesis, we observed no significant difference in MEP amplitudes between out-of-task rest and in-task ITI, and instead found evidence of equivalence, indicating that humans are able to return to a stable motor resting state within seconds after a response. These data support the interpretation that rest is a uniform motor state in the healthy nervous system. In the future, our data may be a useful reference for motor disorder populations with an impaired ability to return to rest.</p>","PeriodicalId":12268,"journal":{"name":"Experimental Brain Research","volume":" ","pages":"2263-2270"},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141751490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rare incompatible stimuli evoke visual mismatch negativity in a flanker task. 在侧翼任务中,罕见的不相容刺激会诱发视觉错配负性。
IF 1.7 4区 医学
Experimental Brain Research Pub Date : 2024-09-01 Epub Date: 2024-07-04 DOI: 10.1007/s00221-024-06886-9
Kota Suzuki
{"title":"Rare incompatible stimuli evoke visual mismatch negativity in a flanker task.","authors":"Kota Suzuki","doi":"10.1007/s00221-024-06886-9","DOIUrl":"10.1007/s00221-024-06886-9","url":null,"abstract":"<p><p>In the flanker task, the behavioral performance for incompatible stimuli is worse in the mostly compatible (rare) condition than in the equiprobable condition. Furthermore, incompatible stimuli evoke visual mismatch negativity (VMMN) when comparing the rare and equiprobable conditions. Compatible and incompatible stimuli differ in terms of their shape and type. This study aimed to examine whether VMMN evoked by rare incompatible stimuli were associated with the shape or type of the stimulus. In a modified version of the flanker task, stimuli were manipulated by two shapes (typical or peculiar) and two types (compatible or incompatible): typical compatible stimuli (< <  <  <  < and >  >  >  > >), typical incompatible stimuli (> >  <  >  > and <  <  >  < <), peculiar compatible stimuli (+ <  <  <  + and +  >  >  > +), and peculiar incompatible stimuli (+ >  <  >  + and +  <  >  < +). In the rare condition, typical incompatible, peculiar compatible, and peculiar incompatible stimuli were presented with a probability of 10%, whereas all the stimuli were presented equally in the equiprobable condition. Right posterior negativity from 200 to 250 ms was significantly more negative in the rare condition than in the equiprobable condition for typical and peculiar incompatible stimuli; however, this difference was not observed for peculiar compatible stimuli. VMMN was significantly more negative for typical and peculiar incompatible stimuli than for peculiar compatible stimuli, and was not significantly different between typical and peculiar incompatible stimuli. These findings suggest that VMMN for incompatible stimuli is associated with the type rather than the shape of the stimulus.</p>","PeriodicalId":12268,"journal":{"name":"Experimental Brain Research","volume":" ","pages":"2059-2068"},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141497588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interactions between arm and leg neuronal circuits following paired cervical and lumbosacral transspinal stimulation in healthy humans. 健康人在接受成对颈椎和腰骶部经脊髓刺激后,手臂和腿部神经回路之间的相互作用。
IF 1.7 4区 医学
Experimental Brain Research Pub Date : 2024-09-01 Epub Date: 2024-07-22 DOI: 10.1007/s00221-024-06891-y
Abdullah M Sayed Ahmad, Andreas Skiadopoulos, Maria Knikou
{"title":"Interactions between arm and leg neuronal circuits following paired cervical and lumbosacral transspinal stimulation in healthy humans.","authors":"Abdullah M Sayed Ahmad, Andreas Skiadopoulos, Maria Knikou","doi":"10.1007/s00221-024-06891-y","DOIUrl":"10.1007/s00221-024-06891-y","url":null,"abstract":"<p><p>Transspinal (or transcutaneous spinal cord) stimulation is a promising noninvasive method that may strengthen the intrinsic spinal neural connectivity in neurological disorders. In this study we assessed the effects of cervical transspinal stimulation on the amplitude of leg transspinal evoked potentials (TEPs), and the effects of lumbosacral transspinal stimulation on the amplitude of arm TEPs. Control TEPs were recorded following transspinal stimulation with one cathode electrode placed either on Cervical 3 (21.3 ± 1.7 mA) or Thoracic 10 (23.6 ± 16.5 mA) vertebrae levels. Associated anodes were placed bilaterally on clavicles or iliac crests. Cervical transspinal conditioning stimulation produced short latency inhibition of TEPs recorded from left soleus (ranging from - 6.11 to -3.87% of control TEP at C-T intervals of -50, -25, -20, -15, -10, 15 ms), right semitendinosus (ranging from - 11.1 to -4.55% of control TEP at C-T intervals of -20, -15, 15 ms), and right vastus lateralis (ranging from - 13.3 to -8.44% of control TEP at C-T intervals of -20 and - 15 ms) (p < 0.05). Lumbosacral transspinal conditioning stimulation produced no significant effects on arm TEPs. We conclude that in the resting state, cervical transspinal stimulation affects the net motor output of leg motoneurons under the experimental conditions used in this study. Further investigations are warranted to determine whether this protocol may reactivate local spinal circuitry after stroke or spinal cord injury and may have a significant effect in synchronization of upper and lower limb muscle synergies during rhythmic activities like locomotion or cycling.</p>","PeriodicalId":12268,"journal":{"name":"Experimental Brain Research","volume":" ","pages":"2229-2239"},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141733914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Context-dependent reduction in corticomuscular coupling for balance control in chronic stroke survivors. 慢性中风幸存者皮质肌肉耦合对平衡控制的影响随情境而降低。
IF 1.7 4区 医学
Experimental Brain Research Pub Date : 2024-09-01 Epub Date: 2024-07-04 DOI: 10.1007/s00221-024-06884-x
Komal K Kukkar, Nishant Rao, Diana Huynh, Sheel Shah, Jose L Contreras-Vidal, Pranav J Parikh
{"title":"Context-dependent reduction in corticomuscular coupling for balance control in chronic stroke survivors.","authors":"Komal K Kukkar, Nishant Rao, Diana Huynh, Sheel Shah, Jose L Contreras-Vidal, Pranav J Parikh","doi":"10.1007/s00221-024-06884-x","DOIUrl":"10.1007/s00221-024-06884-x","url":null,"abstract":"<p><p>Balance control is an important indicator of mobility and independence in activities of daily living. How the functional coupling between the cortex and the muscle for balance control is affected following stroke remains to be known. We investigated the changes in coupling between the cortex and leg muscles during a challenging balance task over multiple frequency bands in chronic stroke survivors. Fourteen participants with stroke and ten healthy controls performed a challenging balance task. They stood on a computerized support surface that was either fixed (low difficulty condition) or sway-referenced with varying gain (medium and high difficulty conditions). We computed corticomuscular coherence between electrodes placed over the sensorimotor area (electroencephalography) and leg muscles (electromyography) and assessed balance performance using clinical and laboratory-based tests. We found significantly lower delta frequency band coherence in stroke participants when compared with healthy controls under medium difficulty condition, but not during low and high difficulty conditions. These differences were found for most of the distal but not for proximal leg muscle groups. No differences were found at other frequency bands. Participants with stroke showed poor balance clinical scores when compared with healthy controls, but no differences were found for laboratory-based tests. The observation of effects at distal but not at proximal muscle groups suggests differences in the (re)organization of the descending connections across two muscle groups for balance control. We argue that the observed group difference in delta band coherence indicates balance context-dependent alteration in mechanisms for the detection of somatosensory modulation resulting from sway-referencing of the support surface for balance maintenance following stroke.</p>","PeriodicalId":12268,"journal":{"name":"Experimental Brain Research","volume":" ","pages":"2093-2112"},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141497586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信