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Neurobiology Glossary

100 terms total — 24 showing — Last updated 15 Sep 2026

tetrodotoxin TTX

Professional Technical IVT

Potent neurotoxin that selectively blocks voltage-gated sodium channels, preventing action potential generation.

Showing 49–72 of 100

microglia

Intermediate Technical IVT

Immune cells of the central nervous system that monitor brain health and respond to injury or infection.

Technical Term Full entry →

miniature end-plate potential

Advanced Technical IVT

Small spontaneous depolarizations at the neuromuscular junction caused by single vesicle release.

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mossy fiber sprouting

Professional Technical IVT

Aberrant growth of hippocampal mossy fibers that creates new excitatory synapses, often associated with temporal lobe ep...

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motor unit

Intermediate Technical IVT

A motor neuron and all the muscle fibers it innervates, functioning as the basic unit of muscle contraction.

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neural oscillations

Intermediate Technical IVT

Rhythmic fluctuations in electrical activity across neural populations, measured as coordinated changes in membrane pote...

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neuritic plaque

Intermediate Technical IVT

Extracellular deposits of amyloid-beta protein surrounded by dystrophic neurites, a hallmark pathological feature of Alz...

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neurodegenerative disease

Intermediate Technical IVT

Progressive disorder characterized by the gradual loss of structure or function of neurons, leading to cognitive or moto...

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neurofibroma

Professional Technical IVT

A benign peripheral nerve sheath tumor composed of Schwann cells, fibroblasts, and perineural cells.

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neurogenesis

Intermediate Technical IVT

The process by which new neurons are generated from neural stem cells in the developing and adult brain.

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neuropharmacology

Intermediate Technical IVT

The study of how drugs affect cellular function in the nervous system and their mechanisms of action on neural processes...

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neuropil

Advanced Technical IVT

Dense network of unmyelinated axons, dendrites, and glial processes between neuronal cell bodies in gray matter.

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neuroplasticity

Intermediate Technical IVT

The brain's ability to reorganize and form new neural connections throughout life.

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neurotransmitter

Intermediate Technical IVT

Chemical messengers that transmit signals across synapses between neurons.

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node of Ranvier

Intermediate Technical IVT

Gaps in the myelin sheath along myelinated axons where voltage-gated ion channels cluster for saltatory conduction.

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oligodendrocyte

Intermediate Technical IVT

A type of glial cell responsible for producing myelin sheaths around axons in the central nervous system.

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optogenetics

Advanced Technical IVT

Technique using light to control genetically modified neurons expressing light-sensitive proteins.

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paired-pulse facilitation

Advanced Technical IVT

Enhanced neurotransmitter release when two stimuli are delivered in close succession.

PPF
Technical Term Full entry →

paroxysmal depolarization shift

Professional Technical IVT

A prolonged depolarization of neurons that underlies epileptic seizure activity, characterized by sustained calcium infl...

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parvalbumin-positive interneuron

Advanced Technical IVT

Fast-spiking inhibitory neurons expressing the calcium-binding protein parvalbumin.

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patch clamp

Intermediate Technical IVT

An electrophysiological technique using a glass micropipette to measure ionic currents across cellular membranes.

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periictal

Intermediate Technical IVT

The time period immediately before, during, and after a seizure, encompassing preictal, ictal, and postictal phases.

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perikaryon

Intermediate Technical IVT

The cell body of a neuron containing the nucleus and most organelles, excluding axons and dendrites.

Technical Term Full entry →

perineuronal net

Advanced Technical IVT

Extracellular matrix structure surrounding certain neurons that regulates synaptic plasticity and stability.

PNN
Technical Term Full entry →

place cell

Intermediate Technical IVT

Hippocampal neurons that fire when an animal is in a specific location within its environment.

Technical Term Full entry →
Showing 49–72 of 100

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