نتایج جستجو برای: pfc

تعداد نتایج: 4778  

Journal: :I2 Innovación e Investigación en Arquitectura y Territorio 2016

Journal: :Public Health Research & Practice 2016

2010
M. Gopinath S. Ramareddy

Conventional boost PFC converter suffers from the high conduction loss in the input rectifier-bridge. Higher efficiency can be achieved by using the bridgeless boost topology. In this paper, digital simulation of bridgeless PFC boost rectifiers, also called dual boost PFC rectifiers, is presented. Performance comparison between the conventional PFC boost rectifier and the bridgeless PFC boost r...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2007
João J Cerqueira François Mailliet Osborne F X Almeida Thérèse M Jay Nuno Sousa

Research on the detrimental effects of stress in the brain has mainly focused on the hippocampus. Because prefrontal cortex (PFC) dysfunction characterizes many stress-related disorders, we here analyzed the impact of chronic stress in rats on the integrity of the hippocampal-PFC pathway, monitored by behavioral and electrophysiological function and morphological assessment. We show that chroni...

Journal: :Neuron 2016
Shantanu P. Jadhav Gideon Rothschild Demetris K. Roumis Loren M. Frank

Interactions between the hippocampus and prefrontal cortex (PFC) are critical for learning and memory. Hippocampal activity during awake sharp-wave ripple (SWR) events is important for spatial learning, and hippocampal SWR activity often represents past or potential future experiences. Whether or how this reactivation engages the PFC, and how reactivation might interact with ongoing patterns of...

Journal: :Current Biology 2017
Elizabeth L. Johnson Callum D. Dewar Anne-Kristin Solbakk Tor Endestad Torstein R. Meling Robert T. Knight

The ability to represent and select information in working memory provides the neurobiological infrastructure for human cognition. For 80 years, dominant views of working memory have focused on the key role of prefrontal cortex (PFC) [1-8]. However, more recent work has implicated posterior cortical regions [9-12], suggesting that PFC engagement during working memory is dependent on the degree ...

2017
Elizabeth Johnson Robert Knight

Working memory (WM) provides the neurobiological infrastructure for human cognition. Dominant models posit that prefrontal cortex (PFC) supports WM by coordinating control over distributed memory representations. In two studies, multimodal electrophysiology data reveal that PFC control over WM is rhythmic, fundamentally dynamic, and not altogether necessary. Direct brain recordings (n=10) demon...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2000
D B Carr S R Sesack

Excitatory projections from the prefrontal cortex (PFC) to the ventral tegmental area (VTA) play an important role in regulating the activity of VTA neurons and the extracellular levels of dopamine (DA) within forebrain regions. Previous investigations have demonstrated that PFC terminals synapse on the dendrites of DA and non-DA neurons in the VTA. However, the projection targets of these cell...

2010
Andreas Wemhöner Irmgard Hackspiel Nina Hobi Andrea Ravasio Thomas Haller Mario Rüdiger

BACKGROUND Perfluorocarbons (PFC) are used to improve gas exchange in diseased lungs. PFC have been shown to affect various cell types. Thus, effects on alveolar type II (ATII) cells and surfactant metabolism can be expected, data, however, are controversial. OBJECTIVE The study was performed to test two hypotheses: (I) the effects of PFC on surfactant exocytosis depend on their respective va...

2010
Charles R.E. Wilson David Gaffan Philip G.F. Browning Mark G. Baxter

Anatomical and functional studies of the prefrontal cortex (PFC) have identified multiple PFC subregions. We argue that the PFC is involved in cognitive functions exceeding the sum of specific functions attributed to its subregions. These can be revealed either by lesions of the whole PFC, or more specifically by selective disconnection of the PFC from certain types of information (for example,...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید