Results 11 to 20 of about 62,806 (250)

Relationship between tonic and phasic craving for alcohol [PDF]

open access: yesAddictive Behaviors Reports, 2018
Background: Multiple measures are utilized to assess alcohol craving, often interchangeably. Little is known about the relationship between tonic and phasic craving.
Emily E. Hartwell, Lara A. Ray
doaj   +2 more sources

G1/S restriction point coordinates phasic gene expression and cell differentiation

open access: yesNature Communications, 2022
Somatic cells display phasic gene expression with compartmentalized gene expression during the cell cycle, while pluripotent cells lack phasic expression. Here, the authors describe a pathway linking microRNA regulation of the G1/S restriction point with
Brian DeVeale   +7 more
doaj   +1 more source

Brainstem circuitry regulating phasic activation of trigeminal motoneurons during REM sleep. [PDF]

open access: yesPLoS ONE, 2010
Rapid eye movement sleep (REMS) is characterized by activation of the cortical and hippocampal electroencephalogram (EEG) and atonia of non-respiratory muscles with superimposed phasic activity or twitching, particularly of cranial muscles such as those ...
Christelle Anaclet   +3 more
doaj   +1 more source

Phasic firing in dopaminergic neurons is sufficient for behavioral conditioning. [PDF]

open access: yes, 2009
Natural rewards and drugs of abuse can alter dopamine signaling, and ventral tegmental area (VTA) dopaminergic neurons are known to fire action potentials tonically or phasically under different behavioral conditions.
Tsai, Hsing-Chen   +6 more
core   +1 more source

Decoding brain state transitions in the pedunculopontine nucleus: cooperative phasic and tonic mechanisms

open access: yesFrontiers in Neural Circuits, 2015
Cholinergic neurons of the pedunculopontine nucleus (PPN) are most active during the waking state. Their activation is deemed to cause a switch in the global brain activity from sleep to wakefulness, while their sustained discharge may contribute to ...
Anne ePetzold   +5 more
doaj   +1 more source

Dynamic vertical Sauver′s diagrams of the metastable system Fe – Fe3C

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2005
Vertical Sauver′s diagrams provide analogous information about specific alloys same as classical Sauver′s diagram, the Tamman′s diagram or cooling curve with the lever rule application.
Karel Novotný, Josef Filípek
doaj   +1 more source

Retrospective quantification of clinical abdominal DCE-MRI using pharmacokinetics-informed deep learning: a proof-of-concept study

open access: yesFrontiers in Radiology, 2023
IntroductionDynamic contrast-enhanced (DCE) MRI has important clinical value for early detection, accurate staging, and therapeutic monitoring of cancers.
Chaowei Wu   +13 more
doaj   +1 more source

Phasic alertness and cue informativeness

open access: yes, 2021
Phasic alertness is referred to as a short-lived increase in attentional intensity that is evoked by non-specific external stimuli (Sturm & Wilmes, 2001).
Christian H. Poth, Niklas Dietze
core   +1 more source

Slope-based stochastic resonance: how noise enables phasic neurons to encode slow signals. [PDF]

open access: yesPLoS Computational Biology, 2010
Fundamental properties of phasic firing neurons are usually characterized in a noise-free condition. In the absence of noise, phasic neurons exhibit Class 3 excitability, which is a lack of repetitive firing to steady current injections. For time-varying
Yan Gai, Brent Doiron, John Rinzel
doaj   +1 more source

Role of Tri-Phasic Computed Tomography in Evaluation of Hepatocellular Carcinoma Patients with Liver Cirrhosis

open access: yesJournal of Gandhara Medical and Dental Sciences, 2022
OBJECTIVES To assess the usefulness of Tri-phasic computed tomography in the evaluation of hepatocellular carcinoma in cirrhotic patients. METHODOLOGY This cross-sectional study was carried out in the Radiology and Imaging Department of Hayatabad ...
Naila Tamkeen   +6 more
doaj   +1 more source

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