tetrodotoxin TTX
Potent neurotoxin that selectively blocks voltage-gated sodium channels, preventing action potential generation.
tractography
Neuroimaging technique that uses diffusion tensor imaging to visualize and map white matter fiber pathways in the brain.
transduction
Process by which sensory receptors convert physical stimuli into electrical signals that the nervous system can process.
up-state
A depolarized membrane potential state during slow-wave oscillations characterized by increased neural activity.
volume transmission
A mode of neural communication where neurotransmitters diffuse through extracellular space to reach distant targets.