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Central Cholinergic Neurons Are Rapidly Recruited by Reinforcement Feedback
Balázs Hangya1, Sachin P Ranade2, Maja Lorenc2
1Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA; Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest 1083, Hungary.
Cell
|August 29, 2015
Summary
Cholinergic neurons in the basal forebrain do not track attention but rapidly signal reward and punishment. This rapid reinforcement signal supports cortical plasticity and activation.
Area of Science:
- Neuroscience
- Cognitive Science
Background:
- Basal forebrain cholinergic neurons modulate cognition, arousal, attention, and learning.
- Their specific role in behavior remains unclear due to challenges in recording activity during tasks.
Purpose of the Study:
- To investigate the behavioral function of basal forebrain cholinergic neurons.
- To determine if cholinergic neuron activity correlates with sustained attention.
Main Methods:
- Optogenetic identification of cholinergic neurons in mice.
- Recording neuronal activity during an auditory detection task requiring sustained attention.
Main Results:
- Non-cholinergic basal forebrain neurons, not cholinergic ones, correlated with attention.
- Cholinergic neurons exhibited rapid (18 ± 3 ms) and precise responses to reward and punishment.
- Cholinergic responses scaled with reinforcement unexpectedness and were consistent across neurons and nuclei.
Conclusions:
- The cholinergic system rapidly broadcasts reinforcement signals, influencing cortical plasticity.
- Cholinergic neurons play a key role in processing reward and punishment, rather than directly mediating sustained attention.
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