Knowledge Tree
neurotransmitter
Also known as: neurotransmitter, neurotransmitters
Facts (29)
Sources
Action potentials and synapses - Queensland Brain Institute qbi.uq.edu.au 7 facts
claimA neurotransmitter is a chemical released from a neuron following an action potential that travels across the synapse to either excite or inhibit the target neuron, with different neurons utilizing different neurotransmitters to achieve varying effects.
claimAt a synapse, an action potential causes the presynaptic neuron to release neurotransmitters that either excite or inhibit the postsynaptic neuron from firing its own action potential.
claimSynapses function by converting an electrical signal, known as an action potential, into a chemical signal through the release of neurotransmitters, which then bind to postsynaptic receptors to convert the signal back into an electrical form via the flow of charged ions.
claimAn action potential, also called a spike, triggers the release of neurotransmitters across the synaptic cleft, which subsequently induces an electrical signal in the postsynaptic neuron.
claimThe effect of a neurotransmitter (excitatory or inhibitory) is determined by the specific type of neuron releasing it.
claimNeurons communicate with each other using electrical events called action potentials and chemical neurotransmitters.
procedureWhen an action potential reaches the presynaptic terminal, neurotransmitters are released into the synaptic cleft, travel across the gap, and attach to receptors on the postsynaptic side.
Action potential: Definition, Steps, Phases | Kenhub kenhub.com 5 facts
procedureThe process of synaptic transmission involves the following steps: (1) the presynaptic membrane is depolarized by an action potential, (2) calcium voltage-gated channels open, (3) calcium flows into the terminal button, (4) membrane proteins in the presynaptic membrane change state, (5) neurotransmitters are released into the synaptic cleft via exocytosis, (6) neurotransmitters bind to receptors on the postsynaptic membrane, (7) ligand-gated ion channels on the postsynaptic membrane open or close, and (8) ions are redistributed in the postsynaptic cell, resulting in either excitatory or inhibitory responses.
claimThe terminal button of a nerve fiber produces and stores numerous vesicles containing neurotransmitters.
claimAction potentials propagate along the axon cell membrane until reaching the terminal button, where depolarization triggers the release of neurotransmitters into the synaptic cleft.
claimNeurotransmitters are classified as excitatory if they stimulate the target cell to action, or inhibitory if they inhibit the target cell.
claimIn humans, synapses are chemical, meaning nerve impulses are transmitted from the axon ending to the target tissue via chemical substances called neurotransmitters or ligands.
Neuroanatomy, Neuron Action Potential - StatPearls - NCBI Bookshelf ncbi.nlm.nih.gov 4 facts
claimElectrical synapses allow presynaptic and postsynaptic cells to connect and conduct ionic currents without the use of neurotransmitters.
claimAction potential propagation terminates at a synapse, where the signal either causes the release of neurotransmitters or the conduction of ionic currents.
claimChemical synapses and neuromuscular junctions typically utilize neurotransmitters to facilitate signal transmission.
claimIon channels in the neuronal membrane are gated by second messengers, neurotransmitters, or voltage changes, allowing permeable ions to flow down their electrochemical gradients and alter the membrane potential.
The Mechanisms of Psychedelic Visionary Experiences - Frontiers frontiersin.org Sep 27, 2017 3 facts
claimPsychedelics affect a variety of neurotransmitters, including serotonin, acetylcholine, norepinephrine, and dopamine.
claimThe effects of psychedelics on humans derive from the functions of plant substances as exogenous analogs of human neurotransmitters.
claimPrevic (2009) proposes that diverse alterations of consciousness are a function of the activation of the dopamine system, which is stimulated directly by neurotransmitters and drugs, and indirectly through other neurotransmitter systems.
Thinking about the action potential: the nerve signal as a window to ... frontiersin.org 2 facts
claimAnimals with nervous systems translate diverse incoming physical and chemical signals from external sources (such as light rays and sound waves) and internal sources (such as local pH, pressure, temperature, and chemical mediators like hormones, neurotransmitters, or inflammatory stimulants) into electrical messages that travel along neurons.
claimAt the synapse, the message carried by the propagating action potential is communicated to coupled neurons or effector cells through the action potential-controlled release of chemical messenger molecules called neurotransmitters.
“Plants of the Gods” and their hallucinogenic powers in ... surgicalneurologyint.com Jul 19, 2021 1 fact
claimCocaine acts as an indirect sympathomimetic drug that crosses the blood–brain barrier and blocks the transport of dopamine, serotonin, and norepinephrine, which inhibits the re-uptake of these neurotransmitters at presynaptic terminals and increases their quantity and receptor activation in postsynaptic neurons.
The Difference Between The Male and Female Brain - The Renewal ... therenewalpoint.com 1 fact
claimNeurotransmitters are chemicals in the brain that facilitate communication between neurons, with approximately 200 types identified.
The Difference Between Men and Women: Is It All in the Brain? southernregionalahec.org 1 fact
claimMen and women differ in the way they use neurotransmitters and hormones.
Non-physicalist Theories of Consciousness cambridge.org Dec 20, 2023 1 fact
accountThe physical process of moving an arm away from a painful position involves nerves in the arm being stimulated, electrical signals traveling to the brain, the release of neurotransmitters between neurons, and electrical signals returning to the arm to cause muscle contraction.
Effects of psychedelics on neurogenesis and broader neuroplasticity link.springer.com Dec 19, 2024 1 fact
claimThe endocannabinoid system acts retrogradely as a feedback channel, influencing the release of all classical neurotransmitters, according to Skaper and Di Marzo (2012).
Evolutionary psychology - Wikipedia en.wikipedia.org 1 fact
claimBehavioral genetics and its variants, including molecular-level studies of the relationship between genes, neurotransmitters, and behavior, focus on establishing the relative influence of genetics and environment on behavior.
7 Major Organ Systems: Functions and Connections instituteofhumananatomy.com Nov 23, 2025 1 fact
claimWhen electrical signals reach the end of a nerve, they trigger the release of neurotransmitters, which are chemical messengers that cross synapses to continue the signal transmission.
Panpsychism - Wikipedia en.wikipedia.org 1 fact
claimDavid Chalmers concludes that thoughts, actions, intentions, and emotions may be the quiddities of neurotransmitters, neurons, and glial cells, a position associated with Russellian monism.