Abstract:
:Electromyographic recordings (EMGs) were made from the active masseter muscle, of the inhibitory reflex evoked by application of electrical stimuli to the skin of the upper lip in fifteen human subjects. In control sequences, the reflex had a mean latency of 42 +/- 1.1 ms and a mean duration of 45 +/- 2.1 ms. The magnitude of the reflex (measured by integration of the EMG) was reduced (by 18 +/- 7.0%, n = 11; P < 0.05, Student's t test) while the subjects concentrated on a visual feedback signal in order to maintain a steady level of EMG activity. It was further reduced (by 25 +/- 3.6%, n = 10; P < 0.001, Student's t test) when the subjects additionally undertook mental calculations (the 17-times table). These effects were predominantly in the later parts of the responses. They occurred regardless of whether the baseline activity in the masseter muscle was inadvertently raised or lowered during the conditioning procedures. It is concluded that attentional factors can modulate jaw reflexes in man by exerting an influence on the reflex pathway at a point prior to the motoneurones. The underlying mechanism may involve the activation of descending inhibitory pathways and/or a facilitation of mechanisms underlying excitatory responses in jaw closing muscles.
journal_name
Exp Physioljournal_title
Experimental physiologyauthors
Cadden SW,Newton JPdoi
10.1113/expphysiol.1995.sp003849subject
Has Abstractpub_date
1995-03-01 00:00:00pages
299-305issue
2eissn
0958-0670issn
1469-445Xjournal_volume
80pub_type
杂志文章abstract::We measured plasma levels of L-arginine, its analogue NG-monomethyl-L-arginine (L-NMMA), and related amino acids in normal subjects and uraemic patients (n = 31), before and after haemodialysis. Plasma levels of L-arginine were reduced to less than half of normal values in uraemic subjects compared with controls, and ...
journal_title:Experimental physiology
pub_type: 杂志文章
doi:10.1113/expphysiol.1996.sp003950
更新日期:1996-05-01 00:00:00
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journal_title:Experimental physiology
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更新日期:2007-03-01 00:00:00
abstract:NEW FINDINGS:What is the central question of this study? What is the carotid bodies' contribution to active inspiratory and expiratory response to exercise? What is the main finding and its importance? Removal of the carotid bodies reduced the active inspiratory and expiratory responses of diaphragm and abdominal inter...
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更新日期:2018-09-01 00:00:00
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journal_title:Experimental physiology
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更新日期:2010-09-01 00:00:00
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journal_title:Experimental physiology
pub_type: 杂志文章
doi:10.1113/EP088515
更新日期:2021-01-01 00:00:00
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journal_title:Experimental physiology
pub_type: 杂志文章
doi:
更新日期:2000-07-01 00:00:00
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更新日期:2014-07-01 00:00:00
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journal_title:Experimental physiology
pub_type: 杂志文章
doi:10.1113/expphysiol.2009.048215
更新日期:2010-01-01 00:00:00
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journal_title:Experimental physiology
pub_type: 杂志文章
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更新日期:2014-09-01 00:00:00
abstract::The neurohypophysial hormone vasopressin contributes to control of urine output and, while urine flow shows a clear daily rhythm, there has been debate as to whether this is true of neurohypophysial hormones. A study was performed on fifteen adult males, with a mean age of 25 years, over a 24 h period, nine blood samp...
journal_title:Experimental physiology
pub_type: 杂志文章
doi:10.1113/expphysiol.1998.sp004124
更新日期:1998-05-01 00:00:00
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journal_title:Experimental physiology
pub_type: 杂志文章
doi:10.1113/expphysiol.2009.050682
更新日期:2010-04-01 00:00:00
abstract::The role of testosterone (T) in the regulation of cardiovascular function in females is not well understood. Our goal was to examine the effect of T on cardiomyocyte biology by measuring sarcomere shortening/relaxation and intracellular calcium cycling in adult female Sprague-Dawley rats. The rats were divided into th...
journal_title:Experimental physiology
pub_type: 杂志文章
doi:10.1113/expphysiol.2012.067009
更新日期:2013-01-01 00:00:00
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pub_type: 杂志文章
doi:10.1113/expphysiol.2004.028886
更新日期:2005-03-01 00:00:00
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journal_title:Experimental physiology
pub_type: 杂志文章
doi:10.1113/expphysiol.2008.042838
更新日期:2008-11-01 00:00:00
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journal_title:Experimental physiology
pub_type: 杂志文章
doi:10.1113/EP086867
更新日期:2018-05-01 00:00:00
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doi:10.1113/EP088226
更新日期:2020-02-01 00:00:00
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更新日期:2003-01-01 00:00:00
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journal_title:Experimental physiology
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doi:10.1113/expphysiol.1997.sp004056
更新日期:1997-07-01 00:00:00
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journal_title:Experimental physiology
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更新日期:1990-09-01 00:00:00
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journal_title:Experimental physiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:2000-03-01 00:00:00
abstract::The contribution of almitrine bismesylate to the occurrence and pattern of augmented breaths was studied in fifteen spontaneously breathing, anaesthetized cats. Breathing was via a tracheostomy, while the laryngeal resistance to airflow was measured with the larynx isolated in situ. Almitrine bismesylate at a dose of ...
journal_title:Experimental physiology
pub_type: 杂志文章
doi:10.1113/expphysiol.1992.sp003565
更新日期:1992-01-01 00:00:00
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journal_title:Experimental physiology
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更新日期:2004-05-01 00:00:00
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journal_title:Experimental physiology
pub_type: 杂志文章,随机对照试验
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更新日期:2010-10-01 00:00:00
abstract:NEW FINDINGS:What is the central question of this study? What is the role of microRNA-424-5p (miR-424-5p) in aortic smooth muscle cells? How does miR-424-5p function as a suppressor of the inflammatory response? What is the main finding and its importance? Upregulation of miR-424-5p inhibits the inflammatory response i...
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pub_type: 杂志文章
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更新日期:2020-06-01 00:00:00
abstract:NEW FINDINGS:What is the topic of this review? In this review, we examine the evidence for control mechanisms underlying exercise hyperpnoea, giving attention to the feedback from thin-fibre skeletal muscle afferents, and highlight the frequently conflicting findings and difficulties encountered by researchers using a ...
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pub_type: 杂志文章,评审
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更新日期:2019-11-01 00:00:00
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更新日期:2019-05-01 00:00:00
abstract:NEW FINDINGS:What is the central question of this study? Does hsa_circ_001653 influence the development of gastric cancer (GC) and if so how? What is the main finding and its importance? Bioinformatics analysis revealed the presence of differentially expressed hsa_circ_001653 in GC and adjacent normal tissues, and this...
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pub_type: 杂志文章
doi:10.1113/EP088399
更新日期:2020-10-02 00:00:00