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Nonsynaptic diffusion neurotransmission (NDN) in the brain

P Bach-y-Rita1

  • 1Department of Rehabilitation Medicine, University of Wisconsin-Madison 53706.

Neurochemistry International
|October 1, 1993
PubMed
Summary
This summary is machine-generated.

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Nonsynaptic diffusion neurotransmission in the brain: functional considerations.

Neurochemical research·2001

Nonsynaptic diffusion neurotransmission (NDN) complements traditional synaptic transmission. This mechanism involves substances diffusing through extracellular fluid and cells, impacting functions like mood, sleep, and brain tone.

Area of Science:

  • Neuroscience
  • Neurobiology
  • Cellular signaling

Background:

  • The synapse is the dominant model for neurotransmission.
  • Neuromodulation is recognized as a complementary mechanism.
  • Alternative neurotransmission pathways require further conceptualization.

Purpose of the Study:

  • To reframe synaptic transmission as one of several neurotransmission mechanisms.
  • To introduce and explore nonsynaptic diffusion neurotransmission (NDN).
  • To investigate the roles of NDN in various physiological and pathological processes.

Main Methods:

  • Conceptual analysis and framework development.
  • Literature review on diffusion-based signaling.
  • Exploration of NDN's involvement in diverse neural functions.

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Main Results:

  • Synaptic transmission is proposed as one of multiple neurotransmission mechanisms.
  • Nonsynaptic diffusion neurotransmission (NDN) is defined, encompassing extracellular and intracellular diffusion.
  • NDN's potential roles in sustained functions (mood, sleep, brain tone) and specific processes (LTP, visual system, brain injury recovery, neuropharmacology) are highlighted.

Conclusions:

  • NDN represents a significant, yet often overlooked, mode of neurotransmission.
  • NDN likely plays crucial roles in widespread, sustained brain functions.
  • Further research into NDN is warranted to fully understand brain function and develop novel therapeutics.