Dataset Information

Motivation, Perception, and Chance Converge to Make a Binary Decision.

ABSTRACT: We reveal a central role for chance neuronal events in the decision of a male fly to court, which can be modeled as a coin flip with odds set by motivational state. The decision is prompted by a tap of a female with the male's pheromone-receptor-containing foreleg. Each tap evokes competing excitation and inhibition onto P1 courtship command neurons. A motivating dopamine signal desensitizes P1 to the inhibition, increasing the fraction of taps that successfully initiate courtship. Once courtship has begun, the same dopamine tone potentiates recurrent excitation of P1, maintaining the courtship of highly motivated males for minutes and buffering against termination. Receptor diversity within P1 creates separate channels for tuning the propensities to initiate and sustain courtship toward appropriate targets. These findings establish a powerful invertebrate system for cue-triggered binary decisions and demonstrate that noise can be exploited by motivational systems to make behaviors scalable and flexible.

SUBMITTER: Zhang SX

PROVIDER: S-EPMC7476641 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Motivation, Perception, and Chance Converge to Make a Binary Decision.

Zhang Stephen X SX Miner Lauren E LE Boutros Christine L CL Rogulja Dragana D Crickmore Michael A MA

Neuron 20180705 2

We reveal a central role for chance neuronal events in the decision of a male fly to court, which can be modeled as a coin flip with odds set by motivational state. The decision is prompted by a tap of a female with the male's pheromone-receptor-containing foreleg. Each tap evokes competing excitation and inhibition onto P1 courtship command neurons. A motivating dopamine signal desensitizes P1 to the inhibition, increasing the fraction of taps that successfully initiate courtship. Once courtshi ...[more]

PMID: 29983326

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Dataset Information

Motivation, Perception, and Chance Converge to Make a Binary Decision.

Publications

Motivation, Perception, and Chance Converge to Make a Binary Decision.

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