| Reduced input from foot sole skin through cooling differentially modulates the short latency and medium latency vestibular reflex responses to galvanic vestibular stimulation. | |
| | |
MedLine Citation:
|
PMID: 22278107 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Sensory afferent information from the skin of the foot sole and information from the vestibular system converge within the central nervous system; however, their mode of interaction remains unknown. The purpose of this study was to investigate the effect of reduced cutaneous foot sole information on the ability of the vestibular system to evoke short latency (SL) and medium latency (ML) lower limb muscle reflex responses. Galvanic vestibular stimulation (GVS; bipolar; binaural; 25 ms; 2 mA square-wave pulse) was applied to standing human subjects (four women, eight men, average age 21.1 ± 3.0 years) both before and after cooling the foot soles in 1°C ice water (15 min initially, followed by 5 min between blocks of 200 GVS pulses). Changes in soleus reflex amplitude were examined. Following ice water immersion, there was a 35.16% increase in the size of the ML response in the soleus muscle when expressed as a percentage of pre-stimulus electromyographic (EMG) activity (control 26.48 ± 4.91%; ice 36.16 ± 6.52%) with no change in size of the SL response (control 7.42 ± 1.12%; ice 8.72 ± 1.10%). These results support the previously proposed dissociation of the SL and ML responses with respect to their circuitry and functions. The results also suggest a greater role for cutaneous-vestibular interaction in the modulation of the ML than the SL response and at a location prior to the motoneuron pool. |
| | |
Authors:
|
Stephanie B Muise; Chris K Lam; Leah R Bent |
Related Documents
:
|
20445037 - Rank signals in four areas of macaque frontal cortex during selection of actions and ob... 11596067 - Corticopulvinar connections of areas v5, v4, and v3 in the macaque monkey: a dual model... 22745467 - Data-driven functional clustering reveals dominance of face, place, and body selectivit... 18084287 - On and off domains of geniculate afferents in cat primary visual cortex. 16079397 - Degradation of chondroitin sulfate proteoglycans induces sprouting of intact purkinje a... 16636237 - Normalizing motor-related brain activity: subthalamic nucleus stimulation in parkinson ... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-1-26 |
Journal Detail:
|
Title: Experimental brain research. Experimentelle Hirnforschung. Experimentation cerebrale Volume: - ISSN: 1432-1106 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
|
Created Date: 2012-1-26 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0043312 Medline TA: Exp Brain Res Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, N1G 2W1, Canada. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Approach to Assessing Myocardial Perfusion in Rats Using Static [13N]-Ammonia Images and a Small-Ani...
Next Document: Vision-to-event and movement-to-event coordination in an unimanual circling task.