منابع مشابه
Yawning. A homeostatic reflex and its psychological significance.
Yawning is a common phenomenon that is an expression of certain physiological and psychological states, yet it bas received remarkably little attention in the medical literature. Dumpert (1921), Hauptmann (1920), and Lewy (1921) reached some conclusions regarding the nature of yawning in connection with observations of patients with encephalitis lethargica; however, after the 1920s the subject ...
متن کاملOn yawning and its functions.
The forms and behavioral correlates of yawning are described, and the phylogenetic and ontogenetic aspects of the act are examined with particular attention to its possible functions. Much evidence supports the view that yawning is an important mediator of behavioral arousal levels, a view that is further strengthened by a review of endocrine, neurotransmitter, and pharmacological mechanisms of...
متن کاملPhysiological quadriceps lag: its nature and clinical significance.
A study of the limit of active and passive knee extension in 64 healthy adults revealed a physiological quadriceps lag; that is, in most subjects the active limit of knee extension fell short of the passive limit. With the subjects seated, for the passive test the examiner lifted the heel until the relaxed knee sagged into full extension under its own weight. The active test component comprised...
متن کاملPair and its Physiological Practice
سیستم ارتباطی جنین و مادر به هنگام حاملگی از دو بازو تشکیل شده است. اولین بازو، بازوی جفتی است (Placental arm) که نقش فیزیولوژیکی نظیر تغذیه و فعالیتهای آندوکرینی را ایفاء می نماید و اجزای تشریحی آن عبارت است از خون جنین، جفت و خون مادر. دومین بازو، بازوی پاراکرینی (Paracrin-arm) است که از مهم ترین وظایف آن می توان حفظ و بقای حاملگی، قبول پیوندهای نیم آلوژنیک جنین، حفاظت جسمی جنین و امر زایمان ...
متن کاملYawning Detection Sensitivity and Yawning Contagion
Contagious yawning-the urge to yawn when thinking about, listening to, or viewing yawning-is a well-documented phenomenon in humans and animals. The reduced yawn contagion observed in the autistic population suggested that it might be empathy related; however, it is unknown whether such a connection applies to nonclinical populations. We examined influences from both empathy (i.e., autistic tra...
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ژورنال
عنوان ژورنال: International Journal of Applied and Basic Medical Research
سال: 2013
ISSN: 2229-516X
DOI: 10.4103/2229-516x.112230