Abstract:
:Gait is one of the fundamental behaviors we use to interact with the world. The functionality of the locomotor system is thus related to enriching interactions with our environment. The posterior parietal cortex (PPC) has been found to contribute to motor adaptation during both visuomotor and postural adaptation tasks. Additionally, structural or functional deficits of the PPC lead to impairments in gaits such as shortened steps and increased step width. Based on the aforementioned roles of the PPC, and the importance of gait adaptability, the current investigation sought to identify the role of the PPC in gait adaptation. To achieve this, we performed transcranial direct current stimulation (tDCS) over the bilateral PPC before performing a split-belt treadmill gait adaptation paradigm. We used three stimulation conditions in a within-subject design. tDCS was administered in a randomized and double-blinded order. Following each stimulation session, subjects first performed baseline walking with both belts running at the same speed. Then, subjects walked for 15 min on an uncoupled treadmill, with the belts being driven at a 3:1 speed ratio. Last, they returned to normal (i.e., tied-belt) walking for 5 min. Results from 15 young and healthy subjects identified that subjects required more steps to adapt to split-belt walking following the suppression of the left hemisphere PPC, contralateral to the fast belt. Furthermore, while suppression of the left hemisphere PPC did not increase the number of steps required to re-adapt to tied-belt walking, this condition did lead to increased magnitude of after-effects. Together, these findings indicate that the PPC is involved in locomotor adaptation. These results support previous literature regarding the upper body or postural adaptation and extend these findings to the realm of gait. Results highlight the PPC as a potential target for neurorehabilitation designed to improve gait adaptability.
journal_name
Front Hum Neuroscijournal_title
Frontiers in human neuroscienceauthors
Young DR,Parikh PJ,Layne CSdoi
10.3389/fnhum.2020.581026subject
Has Abstractpub_date
2020-11-05 00:00:00pages
581026issn
1662-5161journal_volume
14pub_type
杂志文章abstract:BACKGROUND:The study of the attentional system remains a challenge for current neuroscience. The "Attention Network Test" (ANT) was designed to study simultaneously three different attentional networks (alerting, orienting, and executive) based in subtraction of different experimental conditions. However, some studies ...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.00813
更新日期:2014-10-13 00:00:00
abstract::The embodiment of tools and rubber hands is believed to involve the modification of two separate body representations: the body schema and the body image, respectively. It is thought that tools extend the capabilities of the body's action schema, whereas prosthetics like rubber hands are incorporated into the body ima...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2018.00537
更新日期:2019-01-11 00:00:00
abstract::Recent models on speech perception propose a dual-stream processing network, with a dorsal stream, extending from the posterior temporal lobe of the left hemisphere through inferior parietal areas into the left inferior frontal gyrus, and a ventral stream that is assumed to originate in the primary auditory cortex in ...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00629
更新日期:2013-10-02 00:00:00
abstract::In virtual reality (VR), it is possible to embody avatars that are dissimilar to the physical self. We examined whether embodying a dissimilar self in VR would decrease anxiety in a public speaking situation. We report the results of an observational pilot study and two laboratory experiments. In the pilot study (N = ...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.00944
更新日期:2014-11-19 00:00:00
abstract::An emerging field of research focused on fluctuations in brain signals has provided evidence that the complexity of those signals, as measured by entropy, conveys important information about network dynamics (e.g., local and distributed processing). While much research has focused on how neural complexity differs in p...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.00409
更新日期:2014-06-10 00:00:00
abstract::Observers can selectively attend to object features that are relevant for a task. However, unattended task-irrelevant features may still be processed and possibly integrated with the attended features. This study investigated the neural mechanisms for processing both task-relevant (attended) and task-irrelevant (unatt...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00193
更新日期:2013-05-15 00:00:00
abstract::Research supports an association between extraversion and dopamine (DA) functioning. DA facilitates incentive motivation and the conditioning and incentive encoding of contexts that predict reward. Therefore, we assessed whether extraversion is related to the efficacy of acquiring conditioned contextual facilitation o...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00288
更新日期:2013-06-13 00:00:00
abstract::Training interventions for older adults are designed to remediate performance on trained tasks and to generalize, or transfer, to untrained tasks. Evidence for transfer is typically based on the trained group showing greater improvement than controls on untrained tasks, or on a correlation between gains in training an...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.00617
更新日期:2014-08-13 00:00:00
abstract::Introduction: Individuals with cerebral palsy (CP) demonstrate high response variability to motor training insufficiently accounted for by age or severity. We propose here that differences in the inherent ability to learn new motor tasks may explain some of this variability. Damage to motor pathways involving the cere...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2017.00049
更新日期:2017-02-08 00:00:00
abstract::The repetition of a stimulus task reduces the neural activity within certain cortical regions responsible for working memory (WM) processing. Although previous evidence has shown that repeated vibrotactile stimuli reduce the activation in the ventrolateral prefrontal cortex, whether the repeated tactile spatial stimul...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.00926
更新日期:2014-12-15 00:00:00
abstract::Amyotrophic lateral sclerosis (ALS) is a devastating disease with a lifetime risk of ∼1 in 2000. Presently, diagnosis of ALS relies on clinical assessments for upper motor neuron and lower motor neuron deficits in multiple body segments together with a history of progression of symptoms. In addition, it is common to e...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00251
更新日期:2013-06-10 00:00:00
abstract::The main objectives of this study were to investigate the development of face perception in Japanese children, focusing on the changes in face processing strategies (holistic and/or configural vs. feature-based) that occur during childhood. To achieve this, we analyzed the face-related N170 component, evoked by uprigh...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2015.00263
更新日期:2015-06-02 00:00:00
abstract::Reinforcement and use-dependent plasticity mechanisms have been proposed to be involved in both savings and anterograde interference in adaptation to a visuomotor rotation (cf. Huang et al., 2011). In Parkinson's disease (PD), dopamine dysfunction is known to impair reinforcement mechanisms, and could also affect use-...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00055
更新日期:2013-02-27 00:00:00
abstract::Recent statistics have shown that the main difficulty in detecting alcoholism is the unreliability of the information presented by patients with alcoholism; this factor confusing the early diagnosis and it can reduce the effectiveness of treatment. However, electroencephalogram (EEG) exams can provide more reliable da...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2020.00365
更新日期:2020-09-18 00:00:00
abstract::Determining the compositional properties of surfaces in the environment is an important visual capacity. One such property is specular reflectance, which encompasses the range from matte to shiny surfaces. Visual estimation of specular reflectance can be informed by characteristic motion profiles; a surface with a spe...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2015.00579
更新日期:2015-10-21 00:00:00
abstract::Training on a visual task leads to increased perceptual and neural responses to visual features that were attended during training as well as decreased responses to neglected distractor features. However, the time course of these attention-based modulations of neural sensitivity for visual features has not been invest...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/neuro.09.069.2009
更新日期:2010-01-06 00:00:00
abstract::Disambiguation refers to the ability to interpret ambiguous information in a sensible way, which is important in an ever-changing external environment. Disambiguation occurs when prior knowledge is given before an ambiguous stimulus is presented. For example, labeling a series of meaningless blobs as a "human body" ca...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00501
更新日期:2013-08-30 00:00:00
abstract::PREVIOUS STUDIES HAVE EXAMINED THE INFLUENCE OF MEDITATION ON THREE FUNCTIONALLY DIFFERENT COMPONENTS OF ATTENTION: executive control, alerting, and orienting. These studies have consistently found that meditation training improves both executive attention and alerting, but there has not been a consistent and clear ef...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.00069
更新日期:2014-02-17 00:00:00
abstract::[This corrects the article DOI: 10.3389/fnhum.2017.00307.]. ...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章,已发布勘误
doi:10.3389/fnhum.2019.00083
更新日期:2019-03-06 00:00:00
abstract::Several observations suggest that overlearned ordinal categories (e.g., letters, numbers, weekdays, months) are processed differently than non-ordinal categories in the brain. In synesthesia, for example, anomalous perceptual experiences are most often triggered by members of ordinal categories (Rich et al., 2005; Eag...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2012.00328
更新日期:2012-12-20 00:00:00
abstract::Our sensorimotor experience unfolds in sequences over time. We hypothesize that the processing of movement sequences with and without a temporal pause will recruit distinct but cooperating neural processes, including cortico-striatal and cortico-cerebellar networks. We thus, compare neural activity during sequence lea...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00492
更新日期:2013-09-18 00:00:00
abstract::In the present paper, we will attempt to gain hints regarding the nature of tactile awareness in humans. At first, we will review some recent literature showing that an actual tactile experience can emerge in absence of any tactile stimulus (e.g., tactile hallucinations, tactile illusions). According to the current mo...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2015.00287
更新日期:2015-05-19 00:00:00
abstract::Experimental studies have demonstrated that the neurotrophin brain-derived neutrophic factor (BDNF) is required for the appropriate development of the central respiratory network, a neuronal complex in the brainstem of vital importance to sustaining life. The pontine Kölliker-Fuse nucleus (KFN) is a fundamental compon...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.00648
更新日期:2014-09-04 00:00:00
abstract::Recent studies demonstrate that syntactic processing can be affected by emotional information and that subliminal emotional information can also affect cognitive processes. In this study, we explore whether unconscious emotional information may also impact syntactic processing. In an Event-Related brain Potential (ERP...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2017.00192
更新日期:2017-04-25 00:00:00
abstract::Performing a task alone or together with another agent can produce different outcomes. The current study used event-related functional magnetic resonance imaging (fMRI) to investigate the neural underpinnings when participants performed a Go/Nogo task alone or complementarily with another co-actor (unseen), whom was b...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2015.00483
更新日期:2015-09-01 00:00:00
abstract::This review article deals with some effects of neck muscle proprioception on human balance, gait trajectory, subjective straight-ahead (SSA), and self-motion perception. These effects are easily observed during neck muscle vibration, a strong stimulus for the spindle primary afferent fibers. We first remind the early ...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fnhum.2014.00895
更新日期:2014-11-04 00:00:00
abstract::Cognitive decline is common in Parkinson's disease (PD), and precise cognitive assessment is important for diagnosis, prognosis, and treatment. To date, there are no studies in PD investigating cultural bias on neuropsychological tests. Clinical practice in multicultural societies such as, Toronto Canada where nearly ...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2019.00269
更新日期:2019-08-08 00:00:00
abstract::Reaction time testing is widely used in online computerized concussion assessments, and most concussion studies utilizing the metric have demonstrated varying degrees of difference between concussed and non-concussed individuals. The problem with most of these online concussion assessments is that they predominantly r...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2020.509091
更新日期:2020-10-01 00:00:00
abstract::Disturbances in feedback processing and a dysregulation of the neural circuit in which the cingulate cortex plays a key role have been frequently observed in depression. Since depression is a heterogeneous disease, instead of focusing on the depressive state in general, this study investigated the relations between th...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00096
更新日期:2013-03-26 00:00:00
abstract::Some studies highlight similarities between Autism Spectrum Disorder (ASD) and healthy aging. Indeed, the decline in older individuals' ability to create a unified representation of the individual features of an event is thought to arise from a disruption of binding within the episodic buffer of working memory (WM) as...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2015.00090
更新日期:2015-03-05 00:00:00