Acetylcholine
An important excitatory neurotransmitter in the central nervous system that participates in learning and memory encoding; elevated levels promote synaptic plasticity.
Timeline (last 90 days)
Kanoski's research revealed a three-stage pathway from the gut to the hippocampus: gut signals travel via the vagus nerve to the nucleus of the solitary tract in the brainstem, then project to the medial septum, and finally reach the hippocampus via cholinergic neurons.
When animals eat, acetylcholine levels in the hippocampus show a sawtooth-like fluctuation, and the baseline level after eating ends is higher than before eating, forming a stepwise rise.
When acetylcholine levels rise, neurons respond more strongly to input signals, synaptic plasticity occurs more readily, thereby promoting memory formation.
All Facts (3)
Kanoski's research revealed a three-stage pathway from the gut to the hippocampus: gut signals travel via the vagus nerve to the nucleus of the solitary tract in the brainstem, then project to the medial septum, and finally reach the hippocampus via cholinergic neurons.
50%UnverifiedWhen animals eat, acetylcholine levels in the hippocampus show a sawtooth-like fluctuation, and the baseline level after eating ends is higher than before eating, forming a stepwise rise.
50%UnverifiedWhen acetylcholine levels rise, neurons respond more strongly to input signals, synaptic plasticity occurs more readily, thereby promoting memory formation.
50%