Active vision in freely moving marmosets using head-mounted eye tracking.

Autor:	Singh VP; Cortical Systems & Behavior Lab, University of California San Diego, San Diego, California, USA., Li J; Cortical Systems & Behavior Lab, University of California San Diego, San Diego, California, USA., Dawson K; Cortical Systems & Behavior Lab, University of California San Diego, San Diego, California, USA., Mitchell JF; Department of Brain and Cognitive Science, University of Rochester, Rochester, New York, USA., Miller CT; Cortical Systems & Behavior Lab, University of California San Diego, San Diego, California, USA.; Neurosciences Graduate Program, University of California San Diego, San Diego, California, USA.
Jazyk:	angličtina
Zdroj:	BioRxiv : the preprint server for biology [bioRxiv] 2024 Nov 21. Date of Electronic Publication: 2024 Nov 21.
DOI:	10.1101/2024.05.11.593707
Abstrakt:	Our understanding of how vision functions as primates actively navigate the real-world is remarkably sparse. As most data have been limited to chaired and typically head-restrained animals, the synergistic interactions of different motor actions/plans inherent to active sensing - e.g. eyes, head, posture, movement, etc. - on visual perception are largely unknown. To address this considerable gap in knowledge, we developed an innovative wireless head-mounted eye tracking system called CEREBRO for small mammals, such as marmoset monkeys. Our system performs C hair-free E ye- Re cording using B ackpack mounted mic RO controllers. Because eye illumination and environment lighting change continuously in natural contexts, we developed a segmentation artificial neural network to perform robust pupil tracking in these conditions. Leveraging this innovative system to investigate active vision, we demonstrate that although freely-moving marmosets exhibit frequent compensatory eye movements equivalent to other primates, including humans, the predictability of the visual behavior (gaze) is higher when animals are freely-moving relative to when they are head-fixed. Moreover, despite increases in eye/head-motion during locomotion, gaze stabilization remains steady because of an increase in VOR gain during locomotion. These results demonstrate the efficient, dynamic visuo-motor mechanisms and related behaviors that enable stable, high-resolution foveal vision in primates as they explore the natural world. Competing Interests: Declaration of Interest: VPS is inventor on provisional patent application no: US 20230404467 A1 filed by the Regents of the University of California entitled “Head Mounted Camera and Eye Track System for Animals.”
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu