NDLI: Age and Muscle-Dependent Variations in Corticospinal Excitability during Standing Tasks

Content Provider	PubMed Central
Author	Anthony, Remaud Bilodeau, Martin Tremblay, François
Editor	Alessio, Avenanti
Copyright Year	2014
Abstract	In this study, we investigated how modulation in corticospinal excitability elicited in the context of standing tasks varies as a function of age and between muscles. Changes in motor evoked potentials (MEPs) recorded in tibialis anterior (TA) and gastrocnemius lateralis (GL) were monitored while participants (young, n = 10; seniors, n = 11) either quietly stood (QS) or performed a heel raise (HR) task. In the later condition, transcranial magnetic stimulation (TMS) pulses were delivered at three specific time points during the task: 1) 250 ms before the “go” cue (preparatory (PREP) phase), 2) 100 ms before the heel rise (anticipatory postural adjustment (APA) phase), and 3) 200 ms after heel rise (execution (EXEC) phase). In each task and each phase, variations in MEP characteristics were analysed for age and muscle-dependent effects. Variations in silent period (SP) duration were also examined for certain phases (APA and EXEC). Our analysis revealed no major difference during QS, as participants exhibited very similar patterns of modulation in both TA and GL, irrespective of their age group. During the HR task, young adults exhibited a differential modulation in the PREP phase with enhanced responses in TA relative to GL, which was not seen in seniors. Finally, besides differences in MEP latency, age had little influence on MEP modulation during the APA and EXEC phases, where amplitude was largely a function of background muscle activity associated with each phase (i.e., APA: TA; EXEC: GL). No age or muscle effects were detected for SP measurements. Overall, our results revealed no major differences between young adults and healthy seniors in the ability to modulate corticospinal facilitation destined to ankle muscles during standing tasks, with maybe the exception of the ability to prime muscle synergies in the preparatory phase of action.
Related Links	http://dx.doi.org/10.1371/journal.pone.0110004
Starting Page	110004
File Format	PDF
ISSN	19326203
e-ISSN	19326203
Journal	PLoS ONE
Issue Number	10
Volume Number	9
Language	English
Publisher	Public Library of Science
Publisher Date	2014-10-01
Access Restriction	Open
Rights Holder	Public Library of Science
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Corticospinal Excitability of Trunk Muscles during Different Postural Tasks

Modulation of Corticospinal Excitability during Acquisition of Action Sequences by Observation

The Modulation of Corticospinal Excitability during Motor Imagery of Actions with Objects

Real-Time Changes in Corticospinal Excitability during Voluntary Contraction with Concurrent Electrical Stimulation

Do You See What I Mean? Corticospinal Excitability During Observation of Culture-Specific Gestures

Functional Assessment of Corticospinal System Excitability in Karate Athletes

Corticospinal Excitability Preceding the Grasping of Emotion-Laden Stimuli

Influence of Uncertainty and Surprise on Human Corticospinal Excitability during Preparation for Action

Effect of Hypohydration on Peripheral and Corticospinal Excitability and Voluntary Activation

Age and Muscle-Dependent Variations in Corticospinal Excitability during Standing Tasks

Similar Documents

Corticospinal Excitability of Trunk Muscles during Different Postural Tasks

Modulation of Corticospinal Excitability during Acquisition of Action Sequences by Observation

The Modulation of Corticospinal Excitability during Motor Imagery of Actions with Objects

Real-Time Changes in Corticospinal Excitability during Voluntary Contraction with Concurrent Electrical Stimulation

Do You See What I Mean? Corticospinal Excitability During Observation of Culture-Specific Gestures

Functional Assessment of Corticospinal System Excitability in Karate Athletes

Corticospinal Excitability Preceding the Grasping of Emotion-Laden Stimuli

Influence of Uncertainty and Surprise on Human Corticospinal Excitability during Preparation for Action

Effect of Hypohydration on Peripheral and Corticospinal Excitability and Voluntary Activation

Age and Muscle-Dependent Variations in Corticospinal Excitability during Standing Tasks