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The role of long-range coupling in crayfish swimmeret phase-locking.

The role of long-range coupling in crayfish swimmeret phase-locking. Biol Cybern. 2018 Mar 22;: Authors: Spardy LE, Lewis TJ Abstract During forward swimming, crayfish and other long-tailed crustaceans rhythmically move four pairs of limbs called swimmerets to propel themselves through the water. This behavior is characterized by a particular stroke pattern in which the most posterior limb pair leads the rhythmic cycle and adjacent swimmerets paddle sequentially with a delay of roughly 25% of the period. The neural circuit underlying limb coordination consists of a chain of local modules, each of which controls a pair of limbs. All modules are directly coupled to one another, but the inter-module coupling strengths decrease with the distance of the connection. Prior modeling studies of the swimmeret neural circuit have included only the dominant nearest-neighbor coupling. Here, we investigate the potential modulatory role of long-range connections between modules. Numerical simulations and analytical arguments show that these connections cause decreases in the phase-differences between neighboring modules. Combined with previous results from a computational fluid dynamics model, we posit that this phenomenon might ensure that the resultant limb coordination lies within a range where propulsion is optimal. To further assess the effects of long-range coupling, we modify the model to reflect an experimental preparation where synaptic transmission from a mid...
Source: Biological Cybernetics - Category: Science Authors: Tags: Biol Cybern Source Type: research

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Conclusions: We did not find any impact of brain atrophy on the risk of END and the outcome at 3 months in severe ischemic strokes after IV thrombolysis.Eur Neurol 2018;79:240 –246
Source: European Neurology - Category: Neurology Source Type: research
HEAT STROKE and heat exhaustion are caused by the body becoming too hot, and the risk increases during warm UK weather. Symptoms of heatstroke include headaches, sweating and feeling sick, and you should never ignore dizziness.
Source: Daily Express - Health - Category: Consumer Health News Source Type: news
Conclusion: We therefor propose that the realignment of metabolic redox oscillations might initiate the observed hypoxia induced attenuation of the transcriptional clock, based on the reduced binding affinity of the CLOCK/BMAL complex to the DNA in an oxidized environment.Cell Physiol Biochem 2018;46:1159 –1174
Source: Cellular Physiology and Biochemistry - Category: Cytology Source Type: research
CONCLUSIONS: The results show that ankle Thera-Band® use may have a positive effect in improving gait parameters by increasing the ankle stability in stroke survivors with foot drop. Its usefulness in the rehabilitation of foot drop in stroke survivors needs to be further investigated. PMID: 29660954 [PubMed - as supplied by publisher]
Source: NeuroRehabilitation - Category: Rehabilitation Tags: NeuroRehabilitation Source Type: research
This study assessed the impact of balance on functional independence after stroke. METHODS: Ninety-five stroke patients undergoing physical rehabilitation at two health institutions in Nigeria participated in the study. Balance and functional independence were respectively assessed with the Berg Balance Scale and the Barthel Index. Binary logistic regression analysis was conducted to examine the independent impact of balance on functional independence while controlling for participants' age, sex, side of hemiparesis and post-stroke duration. RESULTS: Mean±SD age of the participants was 58.4±13.1 years...
Source: NeuroRehabilitation - Category: Rehabilitation Tags: NeuroRehabilitation Source Type: research
CONCLUSION: Patients post-stroke experience hyper sympathetic function at rest and less adaptive cardiac autonomic control during different activities, which all may have an impact on rehabilitation outcomes. PMID: 29660948 [PubMed - as supplied by publisher]
Source: NeuroRehabilitation - Category: Rehabilitation Tags: NeuroRehabilitation Source Type: research
Authors: Hwang J, Shin Y, Park JH, Cha YJ, You JSH Abstract BACKGROUND: The robotic-assisted gait training (RAGT) system has gained recognition as an innovative, effective paradigm to improve functional ambulation and activities of daily living in spinal cord injury and stroke. However, the effects of the Walkbot robotic-assisted gait training system with a specialized hip-knee-ankle actuator have never been examined in the paraplegia and quadriplegia population. OBJECTIVE: The aim of this study was to determine the long-term effects of Walkbot training on clinical for hips and knee stiffness in individuals wit...
Source: NeuroRehabilitation - Category: Rehabilitation Tags: NeuroRehabilitation Source Type: research
CONCLUSIONS: Leptin is involved in long-term regulation of energy balance, while resistin is involved in chronic inflammation and LDL production. These findings highlight the biological mechanisms linking metabolic dysregulation with cancer mortality, and the influence of resistin on cancer mortality only among Blacks suggests that this hormone may be a useful biomarker of racial differences in cancer mortality that deserves further study. IMPACT: Our observed increased risk of cancer mortality associated with higher serum resistin levels among Blacks suggests that if validated in larger cohorts, clinical strategies fo...
Source: Oncotarget - Category: Cancer & Oncology Tags: Oncotarget Source Type: research
HEAT STROKE and heat exhaustion are caused by the body becoming too hot, and the risk increases during warm UK weather. Symptoms of heatstroke include headaches, sweating and feeling sick, and you should never ignore dizziness.
Source: Daily Express - Health - Category: Consumer Health News Source Type: news
This article is licensed under aCreative Commons Attribution 3.0 Unported Licence.Luling Wu, Yang Wang, Tony D. James, Nengqin Jia, Chusen Huang Heat stroke is a lethal condition which can cause dysfunction in the central nervous system, multi-organ damage and even death. To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Chem. Commun. latest articles - Category: Chemistry Authors: Source Type: research
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