scholarly journals The neural foundations of handedness: insights from a rare case of deafferentation

2020 ◽  
Vol 124 (1) ◽  
pp. 259-267 ◽  
Author(s):  
S. A. L. Jayasinghe ◽  
F. R. Sarlegna ◽  
R. A. Scheidt ◽  
R. L. Sainburg
Keyword(s):  
Motor Control ◽  
Upper Limb ◽  
Rare Case ◽  
Sensory Information ◽  
Proprioceptive Feedback ◽  
Control Mechanisms ◽  
Computational Simulations ◽  
Somatosensory Information ◽  
Limb Kinematics

The role of proprioceptive feedback on the lateralization of motor control mechanisms is unclear. We examined upper limb kinematics in a rare case of peripheral deafferentation to determine the role of sensory information in integrating motor control mechanisms from each hemisphere. Our empirical findings and computational simulations showed that the loss of somatosensory information results in an impaired integration of control mechanisms, thus providing support for a complementary dominance hypothesis of handedness.

scholarly journals Rare Case of Servelle Martorelle Syndrome

2014 ◽  
Vol 10 (4) ◽  
pp. 91-94
Author(s):  
A Bhatnagar ◽  
M Deshpande
Keyword(s):  
Soft Tissue ◽  
Upper Limb ◽  
Rare Case ◽  
Prompt Treatment ◽  
Congenital Vascular Malformation ◽  
History Of ◽  
The Right ◽  
Scapular Region

Servelle Martorelle Syndrome is a congenital vascular malformation associated with soft tissue hypertrophy and bony hypoplasia. This rarely involves whole of an extremity, with involvement of part of limbs reported in literature. We present a case of a twelve year boy who presented to the Department of Plastic Surgery SGPGIMS in April 2011 ,with history of circumferential soft tissue hypertrophy involving whole of left upper limb, scapular region and axilla since birth. The entire left upper limb length was lesser than the right upper limb. Hence this is a very rare case of Servelle Martorelle Syndrome having extensive limb involvement at a very young age. Highlighted is the role of conservative treatment and close follow-up to understand the natural history of the diseases, with prompt treatment of complications. DOI: http://dx.doi.org/10.3126/kumj.v10i4.11011 Kathmandu Univ Med J 2012;10(4):91-94

Upper limb kinematics and the role of the wrist during stone tool production

2010 ◽  
Vol 143 (1) ◽  
pp. 134-145 ◽  
Author(s):  
E.M. Williams ◽  
A.D. Gordon ◽  
B.G. Richmond
Keyword(s):  
Upper Limb ◽  
Stone Tool ◽  
Limb Kinematics

Do Executive Motor-Control Mechanisms Regulate Monetary Choice and Gambling?

2011 ◽  
Author(s):  
Frederick Verbruggen ◽  
Rachel Adams ◽  
Chris Chambers
Keyword(s):  
Motor Control ◽  
Control Mechanisms

Pulvino-cortical interaction: an integrative role in the control of attention

2019 ◽  
Author(s):  
Alexia Bourgeois ◽  
Carole Guedj ◽  
Emmanuel Carrera ◽  
Patrik Vuilleumier
Keyword(s):  
Executive Control ◽  
Sensory Information ◽  
Relevant Information ◽  
Cortical Circuits ◽  
Attention And Executive Control ◽  
Neural Communication ◽  
Subcortical Regions ◽  
Theoretical Proposal ◽  
Selection Of

Selective attention is a fundamental cognitive function that guides behavior by selecting and prioritizing salient or relevant sensory information of our environment. Despite early evidence and theoretical proposal pointing to an implication of thalamic control in attention, most studies in the past two decades focused on cortical substrates, largely ignoring the contribution of subcortical regions as well as cortico-subcortical interactions. Here, we suggest a key role of the pulvinar in the selection of salient and relevant information via its involvement in priority maps computation. Prioritization may be achieved through a pulvinar- mediated generation of alpha oscillations, which may then modulate neuronal gain in thalamo-cortical circuits. Such mechanism might orchestrate the synchrony of cortico-cortical interaction, by rendering neural communication more effective, precise and selective. We propose that this theoretical framework will support a timely shift from the prevailing cortico- centric view of cognition to a more integrative perspective of thalamic contributions to attention and executive control processes.

Anxiety and cognitive load affect upper limb motor control in Parkinson's disease during medication phases

2021 ◽  
Author(s):  
Zahra Nodehi ◽  
Hajar Mehdizadeh ◽  
Akram Azad ◽  
Maryam Mehdizadeh ◽  
Elham Reyhanian ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Motor Control ◽  
Cognitive Load ◽  
Upper Limb

scholarly journals Using Regulatory Flexibility to Address Market Informality in Seed Systems: A Global Study

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 377
Author(s):  
Katrin Kuhlmann ◽  
Bhramar Dey
Keyword(s):  
Seed Quality ◽  
Regulatory Environment ◽  
Control Mechanisms ◽  
Seed Systems ◽  
High Quality ◽  
Design And Implementation ◽  
Key Dimensions ◽  
Regulatory Flexibility

Seed rules and regulations determine who can produce and sell seeds, which varieties will be available in the market, the quality of seed for sale, and where seed can be bought and sold. The legal and regulatory environment for seed impacts all stakeholders, including those in the informal sector, through shaping who can participate in the market and the quality and diversity of seed available. This paper addresses a gap in the current literature regarding the role of law and regulation in linking the informal and formal seed sectors and creating more inclusive and better governed seed systems. Drawing upon insights from the literature, global case studies, key expert consultations, and a methodology on the design and implementation of law and regulation, we present a framework that evaluates how regulatory flexibility can be built into seed systems to address farmers’ needs and engage stakeholders of all sizes. Our study focuses on two key dimensions: extending market frontiers and liberalizing seed quality control mechanisms. We find that flexible regulatory approaches and practices play a central role in building bridges between formal and informal seed systems, guaranteeing quality seed in the market, and encouraging market entry for high-quality traditional and farmer-preferred varieties.

Compensation Control Mechanisms in the American States

1989 ◽  
Vol 18 (3) ◽  
pp. 325-338 ◽  
Author(s):  
Wendell C. Lawther ◽  
Earle C. Traynham ◽  
Kenneth M. Jennings
Keyword(s):  
Collective Bargaining ◽  
State Government ◽  
Control Mechanisms ◽  
Compensation Control ◽  
Initial Analysis ◽  
Personnel Practices ◽  
State Compensation ◽  
American States

There are few studies which report on the personnel practices in the American states. A survey of state compensation analysts in the Summer of 1987 elicited information concerning the use of compensation controls in state government. Results indicate that with the exception of wage and salary surveys, data concerning compensation controls is rarely collected. Initial analysis indicates that the role of the legislature and the existence of collective bargaining may have an impact on the number of controls used.

scholarly journals Parental perspective: The role of prostheses and prosthetics services in adjusting to a child’s upper limb difference

2020 ◽  
pp. 1-7
Author(s):  
Tara Sims
Keyword(s):  
Coping Strategies ◽  
Peer Support ◽  
Upper Limb ◽  
Family Members ◽  
Parental Adjustment ◽  
Prosthetic Devices ◽  
The Family ◽  
The Impact

BACKGROUND: The impact of paediatric upper limb difference may extend beyond the child themselves to their parents and other family members. Previous research has found that feelings of shock, numbness and loss are common amongst parents and that peer support can be a buffer against stress. OBJECTIVE: The current study aimed to explore the experiences of parents of children with limb difference, and the role of services and prosthetic devices in these experiences. METHODS: Nine parents of children with limb difference participated in either a group (n= 2) or individual (n= 7) interview. RESULTS: Analysis of the interview transcripts revealed four themes – ‘grief and guilt’, ‘prosthesis as a tool for parental adjustment’, ‘support’ and ‘fun and humour’. CONCLUSIONS: Parents may employ coping strategies to help them adjust to their child’s limb difference, including use of a prosthesis, accessing support from statutory services and peers, and use of fun and humour within the family.

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