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Reward history modulates visual attention in an avian model

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Abstract

Attention can be biased towards previously reward-associated stimuli even when they are task-irrelevant and physically non-salient, although studies of reward-modulated attention have been largely limited to primate (including human and nonhuman) models. Birds have been shown to have the capacity to discriminate reward and spatial cues in a manner similar to primates, but whether reward history involuntarily affects their attention in the same way remains unclear. We adapted a spatial cueing paradigm with differential rewards to investigate how reward modulates the allocation of attention in peafowl (Pavo cristatus). The birds were required to locate and peck a target on a computer screen that was preceded by a high-value or low-value color cue that was uninformative with respect to the location of the upcoming target. All birds exhibited a validity effect (performance enhanced on valid compared to invalid cue), and an interaction effect between value and validity was evident at the group level, being particularly pronounced in the birds with the greatest amount of reward training. The time course of reward learning was conspicuously incremental, phenomenologically slower compared to primates. Our findings suggest a similar influence of reward history on attention across phylogeny despite a significant difference in neuroanatomy.

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Data availability

Raw data and all experiment and analysis code are available via the Open Science Framework (OSF) at https://osf.io/dvzqh/?view_only=28bcf725882548e8acb36a06adea7960.

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Acknowledgements

We thank Claire Huff, Grace Martindale, Haley Alexander, Cy Brooks, Amanda Harvey, Diane Solis, Abigail Serna, and Ashley Trujillo for assistance with data collection. We thank Maria Clara Braga for equipment sketches as well as assistance with equipment maintenance and repairs.

Funding

This research was supported by a Program to Enhance Scholarly and Creative Activities grant from Texas A&M University to JLY and JJH, and a start-up package and endowed research funds from Texas A&M University to BAA.

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Authors

Contributions

M-RL, BAA, and JYL wrote the main manuscript text. M-RL, JJH, BAA, and JYL reviewed the manuscript text. M-RL, MHD, JLH, LAB, JSW, and ACV collected data. M-RL, BAA, and JYL designed the experiment. M-RL and BAA designed the testing apparatus. M-RL programmed the experiment, prepared the figures, and ran the analyses.

Corresponding author

Correspondence to Ming-Ray Liao.

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The authors declare no conflicts of interest.

Ethical approval

This research was approved by Texas A&M University’s Animal Care and Use Committee (#2019-0203).

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Liao, MR., Dillard, M.H., Hour, J.L. et al. Reward history modulates visual attention in an avian model. Anim Cogn 26, 1685–1695 (2023). https://doi.org/10.1007/s10071-023-01811-z

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  • DOI: https://doi.org/10.1007/s10071-023-01811-z

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