23 research outputs found
Effects of sleep deprivation on neural functioning: an integrative review
Sleep deprivation has a broad variety of effects on human performance and neural functioning that manifest themselves at different levels of description. On a macroscopic level, sleep deprivation mainly affects executive functions, especially in novel tasks. Macroscopic and mesoscopic effects of sleep deprivation on brain activity include reduced cortical responsiveness to incoming stimuli, reflecting reduced attention. On a microscopic level, sleep deprivation is associated with increased levels of adenosine, a neuromodulator that has a general inhibitory effect on neural activity. The inhibition of cholinergic nuclei appears particularly relevant, as the associated decrease in cortical acetylcholine seems to cause effects of sleep deprivation on macroscopic brain activity. In general, however, the relationships between the neural effects of sleep deprivation across observation scales are poorly understood and uncovering these relationships should be a primary target in future research
Occurrence and characteristics of hypodense eosinophils in rats infected with Trichinella spiralis
Inertial and self-interactions in structured continua: liquid crystals and magnetostrictive solids
Evolution equations for liquid crystals and for magnetostrictive solids are discussed within the framework of a theory of continua with microstructure that allows for mechanical self-interactions and non-standard inertial terms
Hemodynamic response to featural changes in the occipital and inferior temporal cortex in infants: a preliminary methodological exploration
Intercultural competencies for culturally diverse work teams
Purpose - The purpose of this paper is to examine the impact that the level of individuals' intercultural competencies has on their satisfaction, trust and affective commitment and assessment of their work team