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92 results for “visual perception”
Action-based predictions affect visual perception, neural processing, and pupil size, regardless of temporal predictability
<p>Data supporting the findings in:</p> <p>Lubinus, C., Einhäuser, W., Schiller, F., Kircher, T., Straube, B., & van Kemenade, B. M. (2022). Action-based predictions affect visual perception, neural processing, and pupil size, regardless of temporal predictability. <em><strong>NeuroImage</strong>. DOI: XXX</em></p> <p>Details are specified in the readme file.</p>
Optogenetic activation of visual thalamus generates artificial visual percepts
<p>The lateral geniculate nucleus (LGN), a retinotopic relay center where visual inputs from the retina are processed and relayed to the visual cortex, has been proposed as a potential target for artificial vision. At present, it is unknown whether optogenetic LGN stimulation is sufficient to elicit behaviorally relevant percepts, and the properties of LGN neural responses relevant for artificial vision have not been thoroughly characterized. Here, we demonstrate that tree shrews pre-trained on a visual detection task can detect optogenetic LGN activation using an AAV2-CamKIIα-ChR2 construct and readily generalize from visual to optogenetic detection. Simultaneous recordings of LGN spiking activity and primary visual cortex (V1) local field potentials (LFP) during optogenetic LGN stimulation show that LGN neurons reliably follow optogenetic stimulation at frequencies up to 60 Hz, and uncovered a striking phase locking between the V1 local field potential (LFP) and the evoked spiking activity in LGN. These phase relationships were maintained over a broad range of LGN stimulation frequencies, up to 80 Hz, with spike field coherence values favoring higher frequencies, indicating the ability to relay temporally precise information to V1 using light activation of the LGN. Finally, V1 LFP responses showed sensitivity values to LGN optogenetic activation that were similar to the animal's behavioral performance. Taken together, our findings confirm the LGN as a potential target for visual prosthetics in a highly visual mammal closely related to primates.</p>
Differences in visual-field sensitivity in the inferior hemifield between the eyes affect three-dimensional shape perception in glaucoma
<p><strong>Raw data repository for the article:</strong></p> <p> </p> <p><strong>Differences in visual-field sensitivity in the inferior hemifield between the eyes affect three-dimensional shape perception in glaucoma</strong></p> <p> </p> <p><strong>Hiromasa Sawamura<sup>1</sup>, Ryo Asaoka<sup>1,2,3,4,5</sup>, Hiroshi Murata<sup>1</sup>, Eriko Ando<sup>1</sup>, Céline R. Gillebert<sup>6</sup>, James T. Todd<sup>7</sup>, Guy A. Orban<sup>8</sup></strong></p> <p> </p> <p><sup>1</sup> Department of Ophthalmology, University of Tokyo Graduate School of Medicine, Tokyo, Japan.</p> <p><sup>2</sup> Department of Ophthalmology, Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan.</p> <ol> <li>Seirei Christopher University, Hamamatsu, Shizuoka, Japan.</li> </ol> <p><sup>4</sup> Nanovision Research Division, Research Institute of Electronics, Shizuoka University, Shizuoka Japan.</p> <p><sup>5</sup> The Graduate School for the Creation of New Photonics Industries, Shizuoka Japan.</p> <ol> <li>Department of Brain and Cognition, KU Leuven, Leuven, Belgium.</li> <li>Department of Psychology, The Ohio State University, Columbus, OH, USA.</li> <li>Department of Medicine and Surgery, Neuroscience Unit, University of Parma, Parma, Italy.</li> </ol> <p> </p> <p>Excel data:</p> <p>Binocular Visual-filed sensitivity for 20 subjects: BinocularHFAData.xlsx</p> <p>Visual filed sensitivity in the right eye: OD_HFA_data.xlsx </p> <p>Visual filed sensitivity in the left eye: OS_HFA_data.xlsx</p> <p>Error-in-depth for 20 subjects: ErrorinDepth_20subj.xlsx</p> <p>Results of Simple feature discrimination: Result_SinpleFeatureDiscrimination.xlsx</p>
Data from: Visual attention and perception of road safety advertisements with different level of explicitness in Peruvian millennials and centennials
<p>In the face of the massiveness of content, social advertisements must explore the potential of other dimensions to improve their designs. This paper examines the effect of different levels of graphic explicitness on the attention and perception of road safety ads. An eye-tracking experiment was conducted to assess the visual attention of 60 young millennials and centennials on three ads with images of different levels of explicitness. Participants were agrouped into two groups where they watched two road safety ads with negative valence, but with different levels of explicitness in the second ad seen. For the image and text of each ad, metrics of number of fixations, time to first fixation and total fixation time spent were compared. A survey provided qualitative information about the perception and effectiveness of the ads. Significant effects were found when using negative emotional appeals through explicitness to enhance visual attention and audience perception. But, although the image has prominence, textual design should not be neglected to focus the emotional appeal of the ad.</p>
Investigating Visual Perception Impairments through Serious Games and Eye Tracking to Anticipate Handwriting Difficulties - DATASET
<p>In the present dataset, each row represents a subject. For each subject, there are</p> <ul> <li>the ID</li> <li>the gender</li> <li>the class</li> <li>the results in the BVSCO-2 test</li> <li>their position over or under the BVSCO-2 threshold ("prove sopra soglia" represents the number of exercises in which the subject was over the thresold, and "sopra soglia generale" is 1 when a subject is over the threshold in all of the exercises, and 0 otherwise)</li> <li>the features extracted from the game described in the article (times and errors)</li> <li>the features extracted from the data produced by drawing with the Apple Pencil</li> <li>the features extracted from the eye tracker. </li> </ul>
A Machine Learning Approach to Visual Perception of Forest Trails for Mobile Robots
<p>This dataset is a part of the supplementary materials to the 2017 RAL <a href="https://ieeexplore.ieee.org/document/7358076">article</a> with the same title.</p> <blockquote> <p>A Machine Learning Approach to Visual Perception of Forest Trails for Mobile Robots</p> <p>IEEE Robotics and Automation Letters</p> <p>Alessandro Giusti, Jerome Guzzi, Dan Ciresan, Fang Lin He, Juan Pablo Rodriguez, Flavio Fontana, Matthias Faessler, Christian Forster, Jurgen Schmidhuber, Gianni A. Di Caro, Davide Scaramuzza, Luca Gambardella</p> </blockquote> <p>You can find more information on the <a href="http://bit.ly/perceivingtrails">project web page</a> (alessandrog@idsia.ch).</p> <p><strong>Dataset</strong></p> <p>Folders 001..010 contain the dataset used to train the networks. Folder 000 contains preliminary test data. Folders 011..014 contain data for testing the system.</p> <ul> <li>000 and 003 were shot with an handheld cellphone.</li> <li>001 and 002 were shot with 3 GOPRO Hero 3 cameras, fixed on the head with straps.</li> <li>004..014 were shot with 3 Bluefox cameras, fixed on a rigid helm (the same model and with the same lens as the camera mounted on the quadcopter).</li> </ul>
Virtual Reality for Visual Perception on Schizophrenia
ClinicalTrials.gov study NCT06718556. IPD Sharing: NO. Countries: 1. Publications: 0.
Brain Bases of Natural Scenes's Visual Perception of Natural Scenes
ClinicalTrials.gov study NCT02840305. IPD Sharing: Not stated. Countries: 1. Publications: 29.
Re:Garde Program - Training and Maintaining Visual Perception in Older Adults
ClinicalTrials.gov study NCT05619432. IPD Sharing: Not stated. Countries: 1. Publications: 8.
Improving Visual Perception and Visuo-motor Learning With Neurofeedback of Brain Network Interaction.
ClinicalTrials.gov study NCT05732649. IPD Sharing: NO. Countries: 1. Publications: 9.
Effects of VMI on Visual Perception, Spatial Awareness and Motor Skills in Preschool Children
ClinicalTrials.gov study NCT06955078. IPD Sharing: NO. Countries: 1. Publications: 6.
Visual Mode Switching in Color Perception
ClinicalTrials.gov study NCT05779228. IPD Sharing: YES. Countries: 1. Publications: 1.
Study of the Effect of Proprioceptive Stimuli in the Stomatognathic Area on Visual Perception, With and Without Sound
ClinicalTrials.gov study NCT07051460. IPD Sharing: UNDECIDED. Countries: 1. Publications: 2.
Effectiveness of AV-stimulation in Immersive VR to Improve Visual Perception and Driving Performance
ClinicalTrials.gov study NCT05703360. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Visual Perception Intervention Programmes Impact on Down Syndrome Affiliate Children's Fine Motor and Visual Perception.
ClinicalTrials.gov study NCT06531213. IPD Sharing: NO. Countries: 1. Publications: 1.
Visual Feedback Manipulation in Virtual Reality Alters Extension-evoked Pain Perception in Chronic LBP
ClinicalTrials.gov study NCT06750900. IPD Sharing: YES. Countries: 1. Publications: 1.
Optogenetic activation of visual thalamus generates artificial visual percepts
Open the record for dataset details and reuse information.
Data from: Rhythmic motor behavior influences perception of visual time
Temporal processing is fundamental for an accurate synchronization between motor behavior and sensory processing. Here we investigate how motor timing during rhythmic tapping influences perception of visual time. Participants listen to a sequence of four auditory tones played at 1 Hz and continue the sequence (without auditory stimulation) by tapping four times with their finger. During finger tapping, they are presented with an empty visual interval and are asked to judge its length compared to a previously internalized interval of 150 ms. The visual temporal estimates show non-monotonic changes locked to the finger tapping: perceived time is maximally expanded at half time between the two consecutive finger taps, and maximally compressed near tap onsets. Importantly, the temporal dynamics of the perceptual time distortion scales linearly with the timing of the motor tapping, with maximal expansion being always anchored to the center of the inter-tap interval. These results reveal an intrinsic coupling between distortion of perceptual time and production of self-timed motor rhythms, suggesting the existence of a timing mechanism that keeps perception and action accurately synchronized.
Data from: Opposite distortions in interval timing perception for visual and auditory stimuli with temporal modulations
When an object is presented visually and moves or flickers, the perception of its duration tends to be overestimated. Such an overestimation is called time dilation. Perceived time can also be distorted when a stimulus is presented aurally as an auditory flutter, but the mechanisms and their relationship to visual processing remains unclear. In the present study, we measured interval timing perception while modulating the temporal characteristics of visual and auditory stimuli, and investigated whether the interval times of visually and aurally presented objects shared a common mechanism. In these experiments, participants compared the durations of flickering or fluttering stimuli to standard stimuli, which were presented continuously. Perceived durations for auditory flutters were underestimated, while perceived durations of visual flickers were overestimated. When auditory flutters and visual flickers were presented simultaneously, these distortion effects were cancelled out. When auditory flutters were presented with a constantly presented visual stimulus, the interval timing perception of the visual stimulus was affected by the auditory flutters. These results indicate that interval timing perception is governed by independent mechanisms for visual and auditory processing, and that there are some interactions between the two processing systems.
Influence of Prior Visual Information on Exploratory Movement Direction in Texture Perception
<p>Raw data of all individual participants</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.