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Reward history modulates visual attention in an avian model
Ming-Ray Liao1, Mason H Dillard2, Jason L Hour2
1Department of Psychological and Brain Sciences, Texas A&M University, 4235 TAMU, College Station, TX, 77843-4235, USA. m4liao@tamu.edu.
Animal Cognition
|July 21, 2023
Summary
Reward history influences attention in peafowl, similar to primates. This study shows birds, like primates, direct their attention towards stimuli previously associated with rewards, even when irrelevant to the task.
Area of Science:
- Comparative cognition
- Neuroscience
- Animal behavior
Background:
- Reward-associated stimuli can involuntarily bias attention, a phenomenon primarily studied in primates.
- Birds share some cognitive capacities with primates, but the involuntary influence of reward history on avian attention is not well understood.
Purpose of the Study:
- To investigate how reward history modulates attentional allocation in peafowl (Pavo cristatus).
- To compare reward-modulated attention in birds with existing primate models.
Main Methods:
- Adapted a spatial cueing paradigm with differential rewards for peafowl.
- Birds were trained to locate targets preceded by high-value or low-value, uninformative color cues.
Main Results:
- Peafowl demonstrated a validity effect, with performance enhanced by valid cues.
- An interaction between cue value and validity was observed, particularly in birds with extensive reward training.
- Reward learning in peafowl was incremental and slower than in primates.
Conclusions:
- Findings suggest a conserved influence of reward history on attention across different species, despite neuroanatomical differences.
- This study provides evidence for similar reward-modulated attention mechanisms in birds and primates.
