Sex-specific speed-accuracy tradeoffs shape neural processing of acoustic signals in a grasshopper

Clemens, Jan; Ronacher, Bernhard; Reichert, Michael

doi:10.5061/dryad.05qfttf28

2021

DOI: 10.5061/dryad.05qfttf28

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Sex-specific speed-accuracy tradeoffs shape neural processing of acoustic signals in a grasshopper

Jan Clemens,

Bernhard Ronacher,

Michael Reichert

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Sex-specific speed–accuracy trade-offs shape neural processing of acoustic signals in a grasshopper

2021

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Speed–accuracy trade-offs—being fast at the risk of being wrong—are fundamental to many decisions and natural selection is expected to resolve these trade-offs according to the costs and benefits of behaviour. We here test the prediction that females and males should integrate information from courtship signals differently because they experience different pay-offs along the speed–accuracy continuum. We fitted a neural model of decision making (a drift–diffusion model of integration to threshold) to behavioural data from the grasshopper Chorthippus biguttulus to determine the parameters of temporal integration of acoustic directional information used by male grasshoppers to locate receptive females. The model revealed that males had a low threshold for initiating a turning response, yet a large integration time constant enabled them to continue to gather information when cues were weak. This contrasts with parameters estimated for females of the same species when evaluating potential mates, in which response thresholds were much higher and behaviour was strongly influenced by unattractive stimuli. Our results reveal differences in neural integration consistent with the sex-specific costs of mate search: males often face competition and need to be fast, while females often pay high error costs and need to be deliberate.

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Sex-specific speed–accuracy trade-offs shape neural processing of acoustic signals in a grasshopper

2021

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Sex-specific speed-accuracy tradeoffs shape neural processing of acoustic signals in a grasshopper

Cited by 1 publication

References 1 publication

Sex-specific speed–accuracy trade-offs shape neural processing of acoustic signals in a grasshopper

Sex-specific speed–accuracy trade-offs shape neural processing of acoustic signals in a grasshopper

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