ArticleFrontiers in integrative neuroscience2015
Visual-auditory integration for visual search: a behavioral study in barn owls.
Article in Frontiers in integrative neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Through Hawks' Eyes: Synthetically Reconstructing the Visual Field of a Bird in Flight.International journal of computer vision · 2023Article
- Reality and illusion: the assessment of angular separation of multi-modal signallers in a duetting bird.Proceedings. Biological sciences · 2022Article
- Behavioral and neuronal study of inhibition of return in barn owls.Scientific reports · 2020Article
- Emergence of an Adaptive Command for Orienting Behavior in Premotor Brainstem Neurons of Barn Owls.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018Article
- Behavioral Evidence and Neural Correlates of Perceptual Grouping by Motion in the Barn Owl.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018Article
- Frequency sensitivity in Northern saw-whet owls (Aegolius acadicus).Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2018Article
- Responses to Pop-Out Stimuli in the Barn Owl's Optic Tectum Can Emerge through Stimulus-Specific Adaptation.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016Article
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5 authors.
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Abstract
Barn owls are nocturnal predators that rely on both vision and hearing for survival. The optic tectum of barn owls, a midbrain structure involved in selective attention, has been used as a model for studying visual-auditory integration at the neuronal level. However, behavioral data on visual-auditory integration in barn owls are lacking. The goal of this study was to examine if the integration of visual and auditory signals contributes to the process of guiding attention toward salient stimuli. We attached miniature wireless video cameras on barn owls' heads (OwlCam) to track their target of gaze. We first provide evidence that the area centralis (a retinal area with a maximal density of photoreceptors) is used as a functional fovea in barn owls. Thus, by mapping the projection of the area centralis on the OwlCam's video frame, it is possible to extract the target of gaze. For the experiment, owls were positioned on a high perch and four food items were scattered in a large arena on the floor. In addition, a hidden loudspeaker was positioned in the arena. The positions of the food items and speaker were changed every session. Video sequences from the OwlCam were saved for offline analysis while the owls spontaneously scanned the room and the food items with abrupt gaze shifts (head saccades). From time to time during the experiment, a brief sound was emitted from the speaker. The fixation points immediately following the sounds were extracted and the distances between the gaze position and the nearest items and loudspeaker were measured. The head saccades were rarely toward the location of the sound source but to salient visual features in the room, such as the door knob or the food items. However, among the food items, the one closest to the loudspeaker had the highest probability of attracting a gaze shift. This result supports the notion that auditory signals are integrated with visual information for the selection of the next visual search target.
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