Results 221 to 230 of about 131,181 (262)

The cholinergic system, EEG and sleep

Behavioural Brain Research, 2011
Acetylcholine is a potent excitatory neurotransmitter, crucial for cognition and the control of alertness and arousal. Vigilance-specific recordings of the electroencephalogram (EEG) potently reflect thalamo-cortical and brainstem-cortical cholinergic activity that drives theta rhythms and task-specific cortical (de-synchronisation.
Bettina, Platt, Gernot, Riedel
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Extraneuronal cholinergic system in lymphocytes

Pharmacology & Therapeutics, 2000
Acetylcholine (ACh) is well known as a neurotransmitter in both the central and peripheral nervous systems in mammalian species. Both muscarinic and nicotinic ACh receptors have been identified in lymphocytes isolated from thymus, lymph node, spleen, and peripheral blood, and their stimulation by muscarinic and nicotinic agonists elicits a variety of ...
K, Kawashima, T, Fujii
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The cholinergic system in insect diapause

Journal of Insect Physiology, 1967
Abstract The presumed role of the cholinergic system in the regulation of pupal diapause was investigated by studying the spontaneous electrical activity in the brain and ventral ganglia of diapausing and developing H. cecropia , the activity of the cholinergic enzymes and the levels of cholinergic substance in brains and ganglia of different ...
A, Mansingh, B N, Smallman
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Human placental cholinergic system

Biochemical Pharmacology, 1997
The occurrence of acetylcholine (ACh)-like activity in human placenta, a tissue without innervation, has been known for more than 60 years. However, the non-neuronal functions of ACh in human placenta are not clearly understood. The components of the cholinergic system-ACh, choline acetyltransferase, acetylcholinesterase, butyrylcholinesterase ...
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Function of cholinergic systems and epilepsy

Neuroscience and Behavioral Physiology, 1976
Chemical transmitters of nervous impulses play an important role in the physiological functions of the brain [1–3]. The role of mediator systems in the development of pathological processes in the CNS and, in particular, in,the genesis and course of epilepsy is possible.
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The cholinergic system, amnesia and memory

Physiology & Behavior, 1972
Abstract Three experiments are reported which attempt to manipulate memory through the cholinergic system. All animals learned a single-trial passive avoidance response followed immediately by ECS or Sham ECS. In the first, prostigmine was used to rule out the possibility that effects could be due to peripheral response mechanisms.
D J, Lewis, N J, Bregman
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The Effects of Caffeine on the Cholinergic System

Mini-Reviews in Medicinal Chemistry, 2014
Caffeine is a secondary metabolite of tea and coffee plants. It is the active psychostimulant ingredient of widely consumed beverages, chocolate and some drugs as well. The major pathways for caffeine including interaction with adenosine receptors have been identified but caffeine has several minor pathways as well that remain poorly understood ...
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The Importance of the Cholinergic System in Neurourology

European Urology, 1998
To discuss the parasympathetic cholinergic innervation of the bladder, urethra, prostate and penile erectile tissues, and its functional importance.Evaluation of published information.Release of acetylcholine and other transmitters from cholinergic nerves may mediate bladder contraction, urethral relaxation, prostatic secretion and penile erection ...
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Cholinergic and peptidergic systems in PSP

1994
PSP is associated with a widespread cholinergic deficit likely corresponding to a loss in cholinergic neurons. The cholinergic damage dramatically affects the basal ganglia and specific cell groups of the mesencephalon and pons. This provides an anatomically defined basis for motor and supranuclear oculomotor syndromes characteristic of PSP.
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Section I. The Cholinergic System

2005
Publisher Summary This chapter explains the cholinergic system that consists of the muscarinic system and the nicotinic system. Muscarinic receptors occur in all layers in the neocortex and are also distributed in the rest of the brain. The brain contains several potassium channels that are modulated by the cholinergic system.
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