🔬 Discovery

Chemical neurotransmission (acetylcholine)

Neurotransmisión química (acetilcolina)

Date
1921-1936 · confidence high
Place
University of Graz, Austria
Credited to
Otto Loewi and Henry Dale
People
👤 Henry Hallett Dale1875–1968👤 Otto Loewi1873–1961
Field
Life & health

What was discovered

Loewi showed with two frog hearts that the vagus nerve releases a substance ('Vagusstoff', acetylcholine) that transmits the signal. Neurons communicate chemically, not only electrically.

The idea came to Loewi in a dream. Nobel Prize 1936.

What it led to

  • neuropharmacology (psychiatric drugs, anaesthetics, insecticides)
  • dopamine, serotonin, noradrenaline and biological psychiatry
  • Parkinson's disease and L-DOPA
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📄 Original publication

Über humorale übertragbarkeit der HerznervenwirkungO. Loewi · Pflügers Archiv für die Gesamte Physiologie des Menschen und der Tiere · 1921

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