منابع مشابه
Yawn duration predicts brain weight and cortical neuron number in mammals.
Research indicates that the motor action pattern of yawning functions to promote cortical arousal and state change through enhanced intracranial circulation and brain cooling. Because the magnitude of this response likely corresponds to the degree of neurophysiological change, we hypothesized that interspecies variation in yawn duration would correlate with underlying neurological differences. ...
متن کاملEvolution of Skull and Mandible Shape in Cats (Carnivora: Felidae)
The felid family consists of two major subgroups, the sabretoothed and the feline cats, to which all extant species belong, and are the most anatomically derived of all carnivores for predation on large prey with a precision killing bite. There has been much controversy and uncertainty about why the skulls and mandibles of sabretoothed and feline cats evolved to become so anatomically divergent...
متن کاملSize and Duration of Multinodular Goiter Predicts Its Toxicity
Objective: To evaluate the status of thyroid function in large multinodular goiters of more than 20 years duration. Study design: Prospective, observational study Place and duration of study: Department of Medicine Abbas Institute of Medical Sciences (AIMS) Muzaffarabad. The study included data from Jan 2011 to Dec 2012. Materials and Methods: Patients with large multinodular goiters (MNG) of m...
متن کاملModeling body size evolution in Felidae under alternative phylogenetic hypotheses
The use of phylogenetic comparative methods in ecological research has advanced during the last twenty years, mainly due to accurate phylogenetic reconstructions based on molecular data and computational and statistical advances. We used phylogenetic correlograms and phylogenetic eigenvector regression (PVR) to model body size evolution in 35 worldwide Felidae (Mammalia, Carnivora) species usin...
متن کاملYawn - Scholarpedia
Stretching and yawning (known as pandiculation when they occur together) are under-researched features of behavior. Ethologists agree that almost all vertebrates yawn (Deputte, 1974). Yawning is morphologically similar in reptiles, birds, mammals and fish. These behaviors may be ancestral vestiges maintained throughout evolution with little variation (phylogenetic old origins). Systematic and c...
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ژورنال
عنوان ژورنال: International Journal of Comparative Psychology
سال: 2017
ISSN: 0889-3667,2168-3344
DOI: 10.46867/ijcp.2017.30.00.01