Cortex最新文献

{"title":"Modulation of ventral premotor and primary motor cortex interactions for accurate visuomotor force control","authors":"Tatsunori Watanabe ,&nbsp;Takayuki Kuwabara ,&nbsp;Takuya Matsumoto ,&nbsp;Keisuke Yunoki ,&nbsp;Takayuki Horinouchi ,&nbsp;Hikari Kirimoto","doi":"10.1016/j.cortex.2025.03.005","DOIUrl":"10.1016/j.cortex.2025.03.005","url":null,"abstract":"<div><div>Visually guided movements are mediated by visuomotor networks involving multiple cortical areas. While processing in the occipital-parietal-premotor pathway is relatively well understood, the mechanisms by which motor-related frontal and prefrontal regions influence the primary motor cortex (M1), which controls the moving hand during visuomotor tasks, remain unclear. Using dual-site transcranial magnetic stimulation, here we investigated interhemispheric influences from the right M1, dorsal premotor cortex (PMd), ventral premotor cortex (PMv), supplementary motor area (SMA), and dorsolateral prefrontal cortex (DLPFC) on the left M1 during a visuomotor force control task with the right hand, examining how these influences change with enhanced visuomotor performance. Performance (i.e., amount of error) was manipulated by adjusting the visual gain of force feedback. Higher visual gain increases sensitivity to visual feedback, amplifying small force variations and improving error correction, which in turn reduces performance error. Performance enhancement was accompanied by a reduction in the facilitatory influence of the PMv on the contralateral M1. The M1 and DLPFC exerted an inhibitory influence on the contralateral M1 regardless of performance level. The PMd and SMA exerted neither facilitatory nor inhibitory influence on the contralateral M1. These findings suggest distinct modulation patterns of the M1 by different frontal cortical areas and underscore the critical importance of the PMv-M1 interaction in ensuring fine motor precision during visuomotor tasks.</div></div>","PeriodicalId":10758,"journal":{"name":"Cortex","volume":"186 ","pages":"Pages 51-60"},"PeriodicalIF":3.2,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predictive value in memory evaluation of the temporal mesial afterdischarges induced by electrical stimulations in stereoelectroencephalography","authors":"Adrien Bénard ,&nbsp;Dragos-Mihai Maliia ,&nbsp;Pascale Trébon ,&nbsp;Yves Sahler ,&nbsp;Arnaud Biraben ,&nbsp;Anca Nica","doi":"10.1016/j.cortex.2025.02.014","DOIUrl":"10.1016/j.cortex.2025.02.014","url":null,"abstract":"<div><div>This study evaluates patients' performances on memory tasks during the afterdischarges (ADs) induced by electrical stimulation (ES) in stereoelectroencephalography (SEEG) and compares the results with those of neuropsychological assessment (NPA) in memory evaluation and their predictive value for postoperative memory decline. We reviewed the SEEGs recorded between 1998 and 2022, with bilateral mesial temporal lobe implantations. During the mesial temporal ADs, the patients were evaluated with: the recall of presented objects, the recognition among other objects, and the presence of disorientation in space or time. These performances were compared to the NPA memory scores. For patients who underwent surgery, we evaluated the predictive value of the performance during unilateral mesial temporal AD on postsurgical memory outcomes and compared it with the prediction based on NPA. A total of 65 patients were included. A correlation approaching significance was observed between the NPA results and the performance during the ADs in the non-dominant hemisphere for a recall threshold of .33 (<em>p</em> = .05) and in the dominant side for a recall threshold of .25 (<em>p</em> = .06). For the operated patients, the predictive value of performance during AD for postoperative memory outcome was significant for AD ipsilateral to the surgery at a threshold of .75 (<em>p</em> = .028). It appears that memory performance during mesial temporal AD tends to correlate with the NPA results and can be an additional tool for pre-operative memory assessment. Further dedicated studies are required to validate its more reliable use in surgery.</div></div>","PeriodicalId":10758,"journal":{"name":"Cortex","volume":"186 ","pages":"Pages 35-50"},"PeriodicalIF":3.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Linear phase property of speech envelope tracking response in Heschl’s gyrus and superior temporal gyrus","authors":"Yaoyao Wang ,&nbsp;Dengchang Wu ,&nbsp;Nai Ding ,&nbsp;Jiajie Zou ,&nbsp;Yuhan Lu ,&nbsp;Yuehui Ma ,&nbsp;Xing Zhang ,&nbsp;Wenyuan Yu ,&nbsp;Kang Wang","doi":"10.1016/j.cortex.2025.02.015","DOIUrl":"10.1016/j.cortex.2025.02.015","url":null,"abstract":"<div><div>Understanding how the brain tracks speech during listening remains a challenge. The phase resetting hypothesis proposes that the envelope-tracking response is generated by resetting the phase of intrinsic nonlinear neural oscillations, whereas the evoked response hypothesis proposes that the envelope-tracking response is the linear superposition of transient responses evoked by a sequence of acoustic events in speech. Recent studies have demonstrated a linear phase property of the envelope-tracking response, supporting the evoked response hypothesis. However, the cortical regions aligning with the evoked response hypothesis remain unclear. To address this question, we directly recorded from the cortex using stereo-electroencephalography (SEEG) in nineteen epilepsy patients as they listened to natural speech, and we investigated whether the phase lag between the speech envelope and neural activity linearly changes across frequency. We found that the linear phase property of low-frequency (LF) (.5–40 Hz) envelope tracking was widely observed in Heschl’s gyrus (HG) and superior temporal gyrus (STG), with additional sparser distribution in insula, postcentral gyrus, and precentral gyrus. Furthermore, the latency of LF envelope-tracking responses derived from phase–frequency curve exhibited an increase gradient along HG and in the posterior-to-anterior direction in STG. Our findings suggest that auditory cortex can track speech envelope in line with the evoked response hypothesis.</div></div>","PeriodicalId":10758,"journal":{"name":"Cortex","volume":"186 ","pages":"Pages 1-10"},"PeriodicalIF":3.2,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cognitive neuropsychological and neuroanatomic predictors of naturalistic action performance in left hemisphere stroke: A retrospective analysis","authors":"Simon Thibault ,&nbsp;Aaron L. Wong ,&nbsp;Laurel J. Buxbaum","doi":"10.1016/j.cortex.2025.03.004","DOIUrl":"10.1016/j.cortex.2025.03.004","url":null,"abstract":"<div><div>Individuals who have experienced a left hemisphere cerebrovascular accident (LCVA) have been shown to make errors in naturalistic action tasks designed to assess the ability to perform everyday activities such as preparing a cup of coffee. Naturalistic action errors in this population are often attributed to limb apraxia, a common deficit in the representation and performance of object-related actions. However, naturalistic action impairments are also observed in right hemisphere stroke and traumatic brain injury, populations infrequently associated with apraxia, and errors across all these populations are influenced by overall severity. Based on these and other data, an alternative (though not mutually exclusive) account is that naturalistic action errors in individuals with LCVA are also a consequence of deficits in general attentional resource availability or allocation. In this study, we conducted a retrospective analysis of data from a group of 51 individuals with LCVA who had completed a test of naturalistic action, along with a battery of tests assessing praxis, attention allocation and control, reasoning, and language abilities to determine which of these capacities contribute uniquely to naturalistic action impairments. Using a regularized regression method, we found that naturalistic action impairments are predicted by both praxis deficits (hand posture sequencing and gesture recognition), as well as attention allocation and control deficits (orienting and dividing attention), along with language comprehension ability and age. Using support vector regression-lesion symptom mapping, we demonstrated that naturalistic action impairments are associated with lesions to posterior middle temporal gyrus and anterior inferior parietal lobule regions known to be implicated in praxis; as well the middle frontal gyrus that has been implicated in both praxis and attention allocation and control. Together, these findings support the hypothesis that naturalistic action impairments in people with LCVA are a consequence of apraxia as well as deficits in attention allocation and control.</div></div>","PeriodicalId":10758,"journal":{"name":"Cortex","volume":"185 ","pages":"Pages 301-315"},"PeriodicalIF":3.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stability of tactile hand space representation following sensory loss","authors":"Michelle Giraud ,&nbsp;Luigi Tamè ,&nbsp;Elena Nava","doi":"10.1016/j.cortex.2025.03.003","DOIUrl":"10.1016/j.cortex.2025.03.003","url":null,"abstract":"<div><div>Several studies have shown the presence of significant distortions in tactile perception across different body parts in healthy individuals. These distortions are flexible and perceptual, as revealed by studies that have temporarily altered the visual experience of the body leading to changes in perceived tactile distances. Further, evidence suggests that cortical areas help to mitigate these distortions by rescaling the distorted body representations into an object-centred frame and preserving tactile size constancy. This rescaling implies that the brain possesses a representation of the physical size of the stimulated body part. However, it remains unclear whether long-term visual deprivation could affect tactile size constancy and body distortions. To answer this question, we asked blind and sighted individuals to estimate tactile distances between pairs of touched points delivered on the dorsum of their hands and fingers. The results showed that, regardless of visual experience, both groups of participants showed typical hand distortions, suggesting that even a lack of visual information since birth does not influence the spatial representation of tactile stimulation. On a more theoretical level, these data reveal that tactile size constancy is a stable principle of the system and develops even in the absence of visual input.</div></div>","PeriodicalId":10758,"journal":{"name":"Cortex","volume":"186 ","pages":"Pages 24-34"},"PeriodicalIF":3.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corollary discharge signals during production are domain general: An intracerebral EEG case study with a professional musician","authors":"Anna Lorenz ,&nbsp;Manuel Mercier ,&nbsp;Agnès Trébuchon ,&nbsp;Fabrice Bartolomei ,&nbsp;Daniele Schön ,&nbsp;Benjamin Morillon","doi":"10.1016/j.cortex.2025.02.013","DOIUrl":"10.1016/j.cortex.2025.02.013","url":null,"abstract":"<div><div>As measured by event-related potentials, self-produced sounds elicit an overall reduced response in the auditory cortex compared to identical externally presented stimuli. This study examines this modulatory effect with high-precision recordings in naturalistic settings and explores whether it is domain-general across speech or music. Using stereotactic EEG with a professional musician undergoing presurgical epilepsy evaluation, we recorded auditory cortical activity during music and speech production and perception tasks. Compared to externally presented sounds, self-produced sounds induce modulation of activity in the auditory cortex which vary across frequency and spatial location but is consistent across cognitive domains (speech/music) and different stimuli. Self-produced music and speech were associated with widespread low-frequency (4–8 Hz) suppression, mid-frequency (8–80 Hz) enhancement, and decreased encoding of acoustic features. These findings reveal the domain-general nature of motor-driven corollary discharge modulatory signals and their frequency-specific effects in auditory regions.</div></div>","PeriodicalId":10758,"journal":{"name":"Cortex","volume":"186 ","pages":"Pages 11-23"},"PeriodicalIF":3.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First-person spoken narratives elicit consistent event structures in the angular gyrus","authors":"Helen Mengxuan Wu,&nbsp;Anthony Gianni Vaccaro,&nbsp;Jonas T. Kaplan","doi":"10.1016/j.cortex.2025.03.002","DOIUrl":"10.1016/j.cortex.2025.03.002","url":null,"abstract":"<div><div>Event segmentation theory explains how we parse a stream of continuous information into meaningful event models. Narratives are useful stimuli for studying this phenomenon, as the flow of information and the way we make meaning of them mirrors how we comprehend and make sense of our daily lives. Many studies have investigated the segmentation of audiovisual stimuli, such as movies, but only a handful of studies focused on how the brain parses auditory-only narrative. Using two stories with rich narrative features, we asked participants to listen to the story-recordings while being scanned with fMRI. We then recruited two separate groups of behavioral participants to parse the stories, either via transcript (visual-only) or recording (audio-only). Annotated boundaries from the two modalities were analyzed and used as behavioral benchmarks for the neural-behavioral comparison of event structures. We examined four regions of interest (angular gyrus, posterior cingulate cortex, early auditory cortex, and early visual cortex) and found that only the angular gyrus produced neural event structures that significantly matched with the behavioral event structures across both modalities and both stories. Our results indicate that activity in the angular gyrus is associated with the neural processes involved in parsing continuous narratives, particularly when these narratives are audio-only and contain ambiguous event transitions, rather than with changes in sensory-related features.</div></div>","PeriodicalId":10758,"journal":{"name":"Cortex","volume":"185 ","pages":"Pages 286-300"},"PeriodicalIF":3.2,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Jordan Grafman's legacy","authors":"Irene Cristofori ,&nbsp;Angela Sirigu","doi":"10.1016/j.cortex.2025.03.001","DOIUrl":"10.1016/j.cortex.2025.03.001","url":null,"abstract":"","PeriodicalId":10758,"journal":{"name":"Cortex","volume":"185 ","pages":"Pages 250-252"},"PeriodicalIF":3.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Frontoparietal theta stimulation causally links working memory with impulsive decision making","authors":"Georgia E. Kapetaniou ,&nbsp;Gizem Vural ,&nbsp;Alexander Soutschek","doi":"10.1016/j.cortex.2025.02.012","DOIUrl":"10.1016/j.cortex.2025.02.012","url":null,"abstract":"<div><div>Delaying gratification in value-based decision making is canonically related to activation in the dorsolateral prefrontal cortex (dlPFC), but past research neglected that the dlPFC is part of a larger frontoparietal network. It is therefore unknown whether the dlPFC causally implements delay of gratification in concert with posterior parts of the frontoparietal network rather than in isolation. Here, we addressed this gap by testing the effects of frontoparietal theta synchronization and desynchronization on impulsive decision making using transcranial alternating current stimulation (tACS). Healthy participants performed an intertemporal choice task and a 3-back working memory task while left frontal and parietal cortices were stimulated with a 5 Hz theta frequency at in-phase (synchronization), anti-phase (desynchronization), or sham tACS. We found frontoparietal in-phase theta tACS to improve working memory performance, while in the decision task anti-phase tACS was associated with more impulsive choices and stronger hyperbolic discounting of future rewards. Overall, our findings suggest that future-oriented decision making might causally rely on synchronous activation in a frontoparietal network related to working memory.</div></div>","PeriodicalId":10758,"journal":{"name":"Cortex","volume":"185 ","pages":"Pages 240-249"},"PeriodicalIF":3.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The tangled threads: Unveiling the interplay between the sense of body ownership and the sense of agency in impacting the bodily-self representation in eating disorders","authors":"Marcella Romeo ,&nbsp;Livia Colle ,&nbsp;Dize Hilviu ,&nbsp;Paola Longo ,&nbsp;Emiliano Ricciardi ,&nbsp;Giovanni Abbate-Daga ,&nbsp;Francesca Garbarini ,&nbsp;Carlotta Fossataro","doi":"10.1016/j.cortex.2025.02.011","DOIUrl":"10.1016/j.cortex.2025.02.011","url":null,"abstract":"<div><div>The feeling of owning a body (body ownership) and controlling its actions (sense of agency) contributes to the emergence of the bodily-self representation, whose alteration is at the root of the central psychopathology of Eating Disorders (EDs). Yet, studies addressing these aspects in EDs provided inconsistent results. Here, we simultaneously test body ownership and sense of agency in EDs compared to controls by exploiting different rubber hand illusion (RHI) paradigms (i.e., classic visuo-tactile, passive and active visuo-motor versions). In any RHI versions, no differences in the susceptibility to the illusion between EDs patients and controls emerged at the body ownership questionnaire, thus suggesting a normal multisensory integration mechanism. Crucially, correlation analysis revealed that a higher level of body dissatisfaction is associated with increased susceptibility to RHI, as measured by the body ownership questionnaire. Interestingly, patients with a bulimic variant of EDs reported agency toward the fake hand in the visuo-tactile RHI, revealing an abnormal sense of agency in absence of voluntary movement. Moreover, in the visuo-motor RHI, EDs patients exhibited a proprioceptive drift both in synchronous and asynchronous conditions. Hence, our results revealed a dissociation between explicit and implicit RHI measures, showing a more plastic bodily-self representation when the RHI enlists hand movements, leading to a stronger visual-capture of proprioception. This study contributes to understanding the intricate link between body ownership and agency, shedding light on the role of voluntary actions in driving the sense of self in EDs.</div></div>","PeriodicalId":10758,"journal":{"name":"Cortex","volume":"185 ","pages":"Pages 270-285"},"PeriodicalIF":3.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}