We will test and validate a video platform tool for visual recognition that can be ultimately used to perform quantitative measurements of perception (psychophysics). We developed a web-based application on a RU platform to present visual stimuli (videos) and to collect detection times from human subjects with millisecond resolution. These times will be used to calculate perceptual thresholds of visual recognition for each individual. To validate the identification the participants will type a text word describing the identified figures. The goal of this pilot project is to develop a library of videos and to test it in healthy neurotypical adults. We will develop a set of perceptual tasks to test the cognitive ability to perform visual segmentation of a complex visual scene requiring discrimination of relevant stimuli and suppression of irrelevant distractors in naturalistic visual scenes. The novelty of this is study is generating a web-based platform for participants including immersive image aesthetics in the videos creating an engaging experience using more realistic stimuli for psychophysics than the ones typically used by cognitive researchers. Such studies include very controlled subsets of stimuli (dots lines small geometrical shapes) that are not embedded in their natural contexts or visual environment but rather in artificial and unreal scenes. Our goal is to create visual stimuli using figures and objects immersed in naturalistic scenes to mimic the perceptual strategies that individuals use every day to navigate their environment. We created a set of videos that are ready to use in the platform and developed the methodology to create a significant number of them. Their design is motivated by discoveries concerning the nature of visual processing revealed by our research on animal models. Our goal in this pilot project is to test and validate our library of videos and the web-based platform in neurotypical adults to eventually use it as a tool to study visual perception. We will test the sensitivity and resolution to calculate perceptual thresholds for visual recognition by checking whether the number of images in the videos allow participants to discriminate the embedded figures. A valuable outcome of this study will be an estimate of the range of variability of visual recognition thresholds in a population of neurotypical participants. By developing this website application we aim to create an engaging new tool to perform psychophysics in human subjects that can help us understand the fundamental properties that the brain uses to navigate the environment. Integrating the study of behavior and brain function is one of the current challenges of neuroscience. We believe that developing this psychophysics tool can contribute significantly to understand the neurobiological aspects of human cognition. Notably this platform has the potential to be used as a perceptual training tool.



Eligible Ages
Between 18 and 100
Eligible Genders
Accepts Healthy Volunteers

Study Design

Study Type

More Details

Rockefeller University

Study Contact

Recruitment Office


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