Overview

neurotransmitter

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agonist

agonist  

1 A person or animal engaged in a struggle. Compare antagonist (1).2 A muscle that contracts in the same direction as another. Compare antagonist (2).3 A substance that binds to neuroreceptors and ...
autoreceptor

autoreceptor  

A neuroreceptor for a neurotransmitter located on the neuron that secretes it, such as one of the receptors that are located in the membranes of presynaptic cells and that monitor the amount of ...
chemically gated ion channel

chemically gated ion channel  

An ion channel, the permeability of which is regulated by a neurotransmitter; different neurotransmitters sometimes opening and closing different ion channels in the cell membrane. Compare ...
cholinergic

cholinergic  

Describing a nerve fibre that either releases acetylcholine when stimulated or is itself stimulated by acetylcholine. Compare adrenergic.
classification of psychiatric disorders

classification of psychiatric disorders  

Historical aspectsAdvances in classification have made important contributions to the progress of physical, biological, and even the human sciences. Kepler, Tycho Brahe, and Galileo laid the ...
Dale's law

Dale's law  

The principle according to which a neuron can release only one neurotransmitter substance from its synaptic endings. This law has been repealed in the light of research findings. [Named after the ...
dopaminergic

dopaminergic  

Releasing dopamine; also activated by or responding to dopamine, this extended usage being widespread but consistently rejected by the English physiologist Sir Henry Hallet Dale (1875–1968), who ...
excitatory postsynaptic potential

excitatory postsynaptic potential  

A graded depolarization or decrease in electrical potential across the membrane of a postsynaptic neuron, occurring in response to a signal transmitted across a synapse by a presynaptic neuron, ...
false neurotransmitter

false neurotransmitter  

Any substance that is not a neuron's normal neurotransmitter but that can be taken up by the neuron, stored in its vesicles, and released along with the neuron's normal neurotransmitter when the ...
hallucinogen

hallucinogen  

n. a drug that produces hallucinations, e.g. cannabis and lysergic acid diethylamide. Hallucinogens were formerly used to treat certain types of mental illness. —hallucinogenic adj.
inhibitory

inhibitory  

Tending to cause inhibition (1, 2, 3, 4, 5). In neurophysiology, characteristic of neurons that restrain other neurons from firing, or neurotransmitters such as GABA, the action of which tends to ...
neuroreceptor

neuroreceptor  

A site on the surface or inside a neuron to which a neurotransmitter, a hormone, or a psychotropic drug may bind, either exciting or inhibiting action potentials. Also called a neuron receptor site a ...
neuroregulator

neuroregulator  

A general term for any of the substances that affect neuronal activity, including a neurotransmitter, neuromodulator, or neurohormone.
noradrenergic

noradrenergic  

Releasing noradrenalin (norepinephrine); also activated by or responding to noradrenalin, this extended usage being widespread but consistently rejected by the English physiologist Sir Henry Hallet ...
peptide hormone

peptide hormone  

Any hormone that is a peptide or polypeptide, in contrast to a steroid hormone; the hormones of the hypothalamus and most of the endocrine glands being peptide hormones, apart from those of the ...
phenylethylamine

phenylethylamine  

An amine that resembles amphetamine chemically and pharmacologically and that functions as a neurotransmitter in the nervous system. PEA abbrev. [From phenyl (as in phenylalanine) + ethyl, from Greek ...
postsynaptic receptor

postsynaptic receptor  

A neuroreceptor molecule in a postsynaptic cell membrane specialized to detect and respond to the neurotransmitter released by a presynaptic neuron.
psychopharmacology

psychopharmacology  

The study of the effects of drugs on behaviour and mental experience, with particular emphasis on changes in mood, emotions, and psychomotor functions and abilities. [From psycho(logy) + pharmacology]
reuptake

reuptake  

The reabsorption by a presynaptic neuron of a neurotransmitter substance recently released from its terminal bouton, thereby halting the action potential in the postsynaptic cell.
schizophrenia

schizophrenia  

A major mental disorder, formerly called dementia praecox, characterized by positive symptoms such as delusions, hallucinations, disorganized speech, grossly disorganized behaviour, or catatonia; ...

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