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Early stage of overdose can lead to central nervous system stimulation, for instance, hyperactivity, followed by depression, such as agitation (Anxiety or nervous), delirium, disorientation, hallucinations, seizures, hypertension, or hyperthermia. In late or severe stage of overdose, it could lead to coma, medullary paralysis, death.
Presynaptic inhibition is a phenomenon in which an inhibitory neuron provides synaptic input to the axon of another neuron (axo-axonal synapse) to make it less likely to fire an action potential. Presynaptic inhibition occurs when an inhibitory neurotransmitter, like GABA , acts on GABA receptors on the axon terminal .
Pavlov introduced the ideas of strength of excitation and inhibition, as well as mobility, irradiation, and generalization in the central nervous system. [ 3 ] [ 4 ] [ 5 ] Strength of excitation was considered to be the most important of the nervous system properties by Pavlov because we are often confronted by stimuli in the environment that ...
Axo-axonic synapses are found throughout the central nervous system, including in the hippocampus, cerebral cortex and striatum in mammals; [3] [4] [5] in the neuro-muscular junctions in crustaceans; [6] [7] and in the visual circuitry in dipterans. [8] Axo-axonic synapses can induce either inhibitory or excitatory effects in the postsynaptic ...
Histamine H 3 receptors are expressed in the central nervous system and to a lesser extent the peripheral nervous system, where they act as autoreceptors in presynaptic histaminergic neurons and control histamine turnover by feedback inhibition of histamine synthesis and release. [5]
Glycine and its receptor were first suggested to play a role in inhibition of cells in 1965. [8] Two years later, experiments showed that glycine had a hyperpolarizing effect on spinal motor neurons [9] due to increased chloride conductance through the receptor. [10]
The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain and spinal cord.The CNS is so named because the brain integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric and triploblastic animals—that is, all multicellular animals except sponges and diploblasts.
Reversible inhibitors occupy the esteratic site for short periods of time (seconds to minutes) and are used to treat of a range of central nervous system diseases. Tetrahydroaminoacridine (THA) and donepezil are FDA-approved to improve cognitive function in Alzheimer's disease.