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59 results for “saccades”
Cerebellum spiking data during simulated saccade control
<p>This repository contains data generated by simulating the cerebellum spiking neural network for saccade motor control. Please refer to the article at https://doi.org/10.1101/2022.03.14.483471.</p> <p>Please check the journal of PLOS computational biology for the published version of this article (inpress).</p> <p>The python scripts will generate plots from the simulation datasets. In order to do so, please unzip the datasets and put each of the data subfolders into the current folder along with the plotting scripts.</p> <p>The spiking neuronal circuit datasets have been generated using the NEST spiking neural network library (https://www.nest-simulator.org/), in .gdf format. Users can refer to the presented python scripts to understand how to read from and plot the data. Additionally, for interested users, the trained PF-PC synaptic weights from saccade simulations are also available as EXCEL files in the same dataset folders.</p> <p>In case of queries or any problems, please email me at the email id given in the article linked above.</p>
EEG and eye-tracking data from a go/no-go saccadic task based on facial expression cues
<p>Electroencephalographic (EEG) and eye-tracking data from 20 healthy individuals who performed a go/no-go saccadic task based on facial expression cues aimed at studying error monitoring processes.</p> <p> </p> <p>Version 2 includes only the EEG data, but with triggers of correct and erroneous actions. Version 2 has an error that was corrected for version 3.</p> <p> </p> <p>EEG Triggers</p> <table> <tbody> <tr> <td> <p><span>19</span></p> </td> <td> <p><span>Eye tracker starts recording</span></p> </td> </tr> <tr> <td> <p><span>1</span></p> </td> <td> <p><span>Beginning of each trial</span></p> </td> </tr> <tr> <td> <p><span>200</span></p> </td> <td> <p><span>Gap between neutral and instruction</span></p> </td> </tr> <tr> <td> <p><span>99</span></p> </td> <td> <p><span>Fixation cross between instruction and saccade</span></p> </td> </tr> <tr> <td> <p><span>2</span></p> </td> <td> <p><span>Instruction no-go happy</span></p> </td> </tr> <tr> <td> <p><span>21</span></p> </td> <td> <p><span>Target left no-go happy</span></p> </td> </tr> <tr> <td> <p><span>22</span></p> </td> <td> <p><span>Target right no-go happy</span></p> </td> </tr> <tr> <td> <p><span>121</span></p> </td> <td> <p><span>Response period for no-go happy after target left</span></p> </td> </tr> <tr> <td> <p><span>122</span></p> </td> <td> <p><span>Response period for no-go happy after target right</span></p> </td> </tr> <tr> <td> <p><span>3</span></p> </td> <td> <p><span>Instruction no-go sad</span></p> </td> </tr> <tr> <td> <p><span>31</span></p> </td> <td> <p><span>Target left no-go sad</span></p> </td> </tr> <tr> <td> <p><span>32</span></p> </td> <td> <p><span>Target right no-go sad</span></p> </td> </tr> <tr> <td> <p><span>131</span></p> </td> <td> <p><span>Response period for no-go sad after target left</span></p> </td> </tr> <tr> <td> <p><span>132</span></p> </td> <td> <p><span>Response period for no-go sad after target right</span></p> </td> </tr> <tr> <td> <p><span>4</span></p> </td> <td> <p><span>Instruction pro-right</span></p> </td> </tr> <tr> <td> <p><span>42</span></p> </td> <td> <p><span>Target right pro-right</span></p> </td> </tr> <tr> <td> <p><span>142</span></p> </td> <td> <p><span>Response period for pro-right</span></p> </td> </tr> <tr> <td> <p><span>5</span></p> </td> <td> <p><span>Instruction pro-left</span></p> </td> </tr> <tr> <td> <p><span>51</span></p> </td> <td> <p><span>Target left pro-left</span></p> </td> </tr> <tr> <td> <p><span>151</span></p> </td> <td> <p><span>Response period for pro-left</span></p> </td> </tr> <tr> <td> <p><span>6</span></p> </td> <td> <p><span>Instruction anti-left</span></p> </td> </tr> <tr> <td> <p><span>61</span></p> </td> <td> <p><span>Target left anti-left</span></p> </td> </tr> <tr> <td> <p><span>161</span></p> </td> <td> <p><span>Response period for anti-left</span></p> </td> </tr> <tr> <td> <p><span>7</span></p> </td> <td> <p><span>Instruction anti-right</span></p> </td> </tr> <tr> <td> <p><span>72</span></p> </td> <td> <p><span>Target right anti-right</span></p> </td> </tr> <tr> <td> <p><span>172</span></p> </td> <td> <p><span>Response period for anti-right</span></p> </td> </tr> <tr> <td> <p><span>199</span></p> </td> <td> <p><span>Final fixation period (1.5s black screen after last saccade)</span></p> </td> </tr> <tr> <td> <p><span>190</span></p> </td> <td> <p><span>Eye tracker stops recording</span></p> </td> </tr> <tr> <td> <p><span>proCorr</span></p> </td> <td> <p><span>Beginning of saccade in the correct direction following a pro-saccade intruction</span></p> </td> </tr> <tr> <td> <p><span>proErr</span></p> </td> <td> <p><span>Beginning of saccade in the erroneous direction following a pro-saccade intruction</span></p> </td> </tr> <tr> <td> <p><span>antiCorr</span></p> </td> <td> <p><span>Beginning of saccade in the correct direction following a anti-saccade intruction</span></p> </td> </tr> <tr> <td> <p><span>antiErr</span></p> </td> <td> <p><span>Beginning of saccade in the erroneous direction following a anti-saccade intruction</span></p> </td> </tr> <tr> <td> <p><span>nogoErr</span></p> </td> <td> <p><span>Beginning of saccade in the erroneous direction following a no-go intruction</span></p> </td> </tr> </tbody> </table>
Magnetoencephalographic spectral fingerprints differentiate evidence accumulation from saccadic motor preparation in perceptual decision-making
<p>This repository contains the dataset of the paper "Magnetoencephalographic spectral fingerprints differentiate evidence accumulation<br> from saccadic motor preparation in perceptual decision-making".</p> <p>The dataset contains the MEG power spectrum of 16 subjects in the source space of a perceptual decision making experiment.</p>
Motor recalibration of visual and saccadic maps
<p>How does the brain maintain an accurate visual representation of external space? Movement errors following saccade execution provide sufficient information to recalibrate motor and visual space. Here, we asked whether spatial information for vision and saccades is processed in shared or in separate resources. We used saccade adaptation to modify both saccade amplitudes and visual mislocalization. After saccade adaptation was induced, we compared participants' saccadic and perceptual localization before and after we inserted "no error" trials. In these trials, we clamped the post-saccadic error online to the predicted end points of saccades. In separate experiments, we either annulled the retinal or the prediction error. We also varied the number of "no error" trials across conditions. In all conditions, we found that saccade adaptation remained undisturbed by the insertion of "no error" trials. However, mislocalization decreased as a function of the number of trials in which zero retinal error was displayed. When the prediction error was clamped to zero, no mislocalization was observed at all. The results demonstrate the post-saccadic error is used separately to recalibrate visual and saccadic space.</p>
Motor recalibration of visual and saccadic maps
Open the record for dataset details and reuse information.
Top-down control of saccades requires inhibition of suddenly appearing stimuli
<p>Data from:</p> <p>Wolf, C. & Lappe, M. (202x). Top-down control of saccades requires inhibition of suddenly appearing stimuli.</p> <p>For each of the six experiments the data set can be found in the corresponding txt file (e.g. e1.txt for experiment 1). Labels of the columns can be found in ColumnLabels.pdf</p> <p>For experiments 1-4 the same set of participants has been recorded and identical participant numbers refer to the same individual. For each of the last two experiments, experiment 5 and 6, a new set of participants has been recorded and identical participant numbers do not refer to the same individual from other experiments.</p> <p>For questions please contact chr.wolf[at]wwu.de</p>
Data: Stronger Saccadic Suppression of Displacement and Blanking effect in Children
<p>Data for publication: </p> <p>Emma E. M. Stewart, Carolin Hübner, Alexander C. Schütz; Stronger saccadic suppression of displacement and blanking effect in children. <em>Journal of Vision</em> 2020;20(10):13. doi: <a href="https://doi.org/10.1167/jov.20.10.13">https://doi.org/10.1167/jov.20.10.13</a>.</p>
Dataset from: "Trans-saccadic integration of peripheral and foveal feature information is close to optimal" (Journal of Vision)
<p>Dataset from the following publication:</p> <p>Wolf, C. & Schütz, A.C. (2015). Trans-saccadic integration of peripheral and foveal feature information is close to optimal. <em>Journal of Vision</em>, <em>15</em>(16):1. doi: 10.1167/15.16.1 <span><a href=""></a></span>.</p> <p> </p> <p>Each folder contains the data belonging to the corresponding experiment in the publication. Data sheets are csv files.</p> <p>Each data folder contains a description of the columns. Every row corresponds to one trial. If a value is missing or not applicable for a given trial, it is labelled as NaN ("not a number").</p> <p><br> For experiment 1 and 2, the data also include trials which were not considered for final analysis due to too early or too late saccade onsets.<br> Removed trials can be identified by an additional column (see data description). In experiment 2, participant 41 was excluded from the overall analysis, because this participant was not susceptible to the contrast manipulation.</p> <p>For experiment 3, all trials listed in the data sheet were included in the analysis.</p> <p> </p> <p>For further questions, please contact:<br> chr.wolf[at]uni-marburg.de or a.schuetz[at]uni.marburg.de</p> <p><br> -- Nov 17th 2015 --</p>
Kinesthetic information facilitates saccades towards proprioceptive-tactile targets
<p>Saccades to somatosensory targets have longer latencies and are less accurate and precise than saccades to visual targets. Here we examined how different somatosensory information influences the planning and control of saccadic eye movements. Participants fixated a central cross and initiated a saccade as fast as possible in response to a tactile stimulus that was presented to either the index or the middle fingertip of their unseen left hand. In <em>a static condition</em>, the hand remained at a target location for the entire block of trials and the stimulus was presented at a fixed time after an auditory tone. Therefore, the target location was derived only from proprioceptive and tactile information. In a <em>moving</em> <em>condition</em>, the hand was first actively moved to the same target location and the stimulus was then presented immediately. Thus, in the <em>moving condition</em> additional kinesthetic information about the target location was available. We found shorter saccade latencies in the moving compared to the <em>static condition</em>, but no differences in accuracy or precision of saccadic endpoints. In a second experiment, we introduced variable delays after the auditory tone (<em>static condition</em>) or after the end of the hand movement (<em>moving condition</em>) in order to reduce the predictability of the moment of the stimulation and to allow more time to process the kinesthetic information. Again, we found shorter latencies in the <em>moving</em> compared to the <em>static condition</em> but no improvement in saccade accuracy or precision. In a third experiment, we showed that the shorter saccade latencies in the <em>moving condition</em> cannot be explained by the temporal proximity between the relevant event (auditory tone or end of hand movement) and the moment of the stimulation. Our findings suggest that kinesthetic information facilitates planning, but not control, of saccadic eye movements to proprioceptive-tactile targets.</p>
Spatial attention during saccade decisions
<p>Dataset, analysis files and all figures related to the manuscript. File called "info" explains how to work with code, how to view already prepared figures, how to run experiment etc.</p>
Saccade Adaptation and Visual Uncertainty
<p>Dataset from the following publication:</p> <p>Souto, D., Gegenfurtner, K. R., & Schütz, A. C. (2016). Saccade Adaptation and Visual Uncertainty.<em> Front. Hum. Neurosci.,10</em>(227), 1-12. <a>doi: 10.3389/fnhum.2016.00227 <span></span></a><a></a> .</p>
Perceptual task induces saccadic adaptation by target selection
<p>Dataset from the following publication:</p> <p>Schütz, A. C. & Souto, D. (2015). Perceptual task induces saccadic adaptation by target selection. <em>Front. Hum. Neurosci., 9</em>(566), 1-14. <a>doi:10.3389/fnhum.2015.00566 <span></span></a><a></a></p>
Saccadic adaptation induced by a perceptual task
<p>Dataset from the following publication:</p> <p>Schütz, A. C., Kerzel, D., & Souto, D. (2014). Saccadic adaptation induced by a perceptual task. <em>Journal of Vision, 14</em>(5):4, 1–19. <a>doi:10.1167/14.5.4 <span></span></a><a></a>.</p>
Visual sensitivity for luminance and chromatic stimuli during the execution of smooth pursuit and saccadic eye movements
<p>Dataset relative to the following publication:</p> <p>Braun, D. I., Schütz, A. C., & Gegenfurtner, K. R. (2017). Visual sensitivity for luminance and chromatic stimuli during the execution of smooth pursuit and saccadic eye movements. Vision Research</p>
Earlier saccades to task-relevant targets irrespective of relative gain between peripheral and foveal information
<p>Dataset from the following publication:</p> <p>Wolf, C. & Schütz, A.C. (2017). Earlier saccades to task-relevant targets irrespective of relative gain between peripheral and foveal information. <em>Journal of Vision</em>.</p> <p> </p> <p>Each folder contains the data belonging to the corresponding experiment in the manuscript. Data sheets are csv files.</p> <p>Each folder also contains a description of the columns. Every row in the data sheets corresponds to one trial.</p> <p><br> For further questions, please contact:<br> chr.wolf[at]uni-marburg.de or a.schuetz[at]uni.marburg.de</p>
Data from Bremmer et al. (2017) Heading representations in primates are compressed by saccades. Nature Communications
<p>1. Electrophysiology</p> <p>Experiments had previously been performed in three trained male macaque monkeys (C, H and R). Data, i.e. neural activity, come from the medial superior temporal area (area MST) in two hemispheres of monkeys R (Dataset #-1) and H (Dataset #-2) and from the ventral intraparietal area (area VIP) in two hemispheres of monkeys H (Dataset #-3) and C (Dataset #-4). Eye position was recorded at 500 Hz.</p> <p>Optic flow stimuli consisted of large-field computer generated sequences that were back projected via a video projector (Electrohome) onto a tangent screen, 48 cm in front of the monkey. The size of the projection covered the central 90° x 90° of the visual field. Optic flow sequences (15s – 20s) simulated self-motion of a virtual observer over an extended horizontal plane covered with a texture pattern, located 37cm below eye–level. Trials simulated self–motion in one of three directions: 30° to the left, straight-ahead, and 30° to the right. Data come from 71 neurons with a significant tuning for heading.</p> <p>In primates, self-motion stimuli induce reflexive, optokinetic like eye movements. For further data analysis, we determined periods of slow tracking and saccades. Tracking phases were temporally aligned to the onset of the preceding saccade (termed <strong>Trial</strong> in the following). Trial duration was 700 ms: from -200ms (i.e. 200 ms before the saccade) to 500 ms (i.e. 50 ms after the saccade. Eye-movement data are stored in the data files <strong>GrandAna1Data.mat</strong> (horizontal eye position) and <strong>GrandAna2Data.mat</strong> (vertical eye position). Neural activity in 20 ms bins was determined across these tracking phases for each trial for each of the three self-motion directions. Data come from single- or multi-electrode recordings. Activity from up to seven neurons could be recorded simultaneously. This data is stored in the data file <strong>PSTH.mat</strong>.</p> <p>2. Psychophysics</p> <p><strong>Data on perisaccadic perception of heading.</strong></p> <p>Files:</p> <p><strong>main_exp.zip</strong>, main experiment in which all subjects performed a vertical saccade in the center of the screen (x=0°)</p> <p><strong>head_15.zip</strong>, control using the same vertical saccade as main_exp.zip but with head turned 15 degrees to the left (-15°)</p> <p><strong>eye_15.zip</strong>, control using the vertical saccade at a position 15 degrees to the left (-15°) while the head is directed straight ahead (0°)</p> <p>Content of the files:</p> <p>Each subject is represented by one .mat file. In each file two variables are stored:</p> <p>Fix_Antwort: Control - heading perception during fixation. Column 1 presented heading, column 2 perceived heading</p> <p>Sacc_Antwort: Cell array containing data on perisaccadic perception.</p> <p>{1} presented heading = -30° (left)</p> <p>{2} presented heading = -15°</p> <p>{3} presented heading = 0°</p> <p>{4} presented heading = 15°</p> <p>{5} presented heading = 30° (right)</p> <p>In each cell, each line represents one single trial:</p> <p>Column 1: time of the onset of the heading stimulus relative to saccade onset (in ms)</p> <p>Column 2: perceived heading</p>
Dataset: Coupling of saccade plans to endogenous attention during urgent choices
<p>This dataset (packaged as the zip file datashare.zip) accompanies the article titled "Coupling of saccade plans to endogenous attention during urgent choices" by AT Goldstein, TR Stanford, and E Salinas, which is available as a preprint in bioRxiv. The experimental results in the paper are based on behavioral data collected from 18 human participants during performance of a visuomotor task (the endogenously driven pro/antisaccade task), as described in the article. This dataset contains the trial-by-trial results collected for each participant and upon which all subsequent analyses were based.</p> <p>In addition to the trial-wise data array (stored in the file epa_trials.csv), the package includes Matlab functions and scripts (*.m files) used to analyze the data and recreate the results and figures in the article. Instructions and specifics are detailed in the README file. </p>
Inappropriate rightward saccades after right hemisphere damage: Oculomotor analysis and anatomical correlates
<p>Patients with right hemisphere damage and visual neglect have severe problems to orient attention towards left-sided objects, often associated with the tendency to produce inappropriate rightward saccades. In its most severe form, this tendency can assume the compulsive character of a rightward deviation of gaze as soon as the visual scene deploys (so-called “magnetic attraction of gaze”). However, little is known about the exact nature of inappropriate rightward saccades, their relation with impaired conscious perception of left-sided stimuli, and their lesional correlates. To explore these issues, we studied three groups of patients with right brain damage: patients with signs of left visual neglect associated to left homonymous hemianopia, neglect patients without hemianopia, and patients without neglect or hemianopia. Participants searched for a gap missing within a target, presented among distractors. Manual responses for target detection were required, while participants were encouraged to move their eyes during search. Endogenous attention could be summoned to the target location by a central cue. All the three groups of patients produced inappropriate rightward saccades, which could not be completely overcome by the endogenous orienting of attention induced by the cues. Anatomical analysis indicated a specific implication of damage to the right frontal eye field and to a long-range white matter tract, the fronto-parietal superior longitudinal fasciculus. Fronto-parietal networks in the right hemisphere appear thus to be essential to integrate covert and overt orienting of attention, and to thoroughly explore space in order to become aware of the multiple competing objects around us.</p>
The necessity to choose causes the effects of reward on saccade preparation
<p>Dataset from the following publication:</p> <p>Wolf, C., Heuer, A., Schubö, A., & Schütz, A.C. (2017). The necessity to choose causes the effects of reward on saccade preparation. <em>Scientific Reports</em>.</p> <p><br> Each folder contains the data belonging to the corresponding experiment in the publication. Data sheets are csv files.</p> <p>Each data folder contains a description of the columns. In the data, every row corresponds to one trial. If a value is missing not applicable for a given trial, it is labelled as NaN ("not a number").</p> <p><br> For further questions, please contact:<br> chr.wolf[at]uni-marburg.de or a.schuetz[at]uni.marburg.de</p> <p><br> -- Feb 28th 2017 --</p>
Attention modulates trans-saccadic integration data
<p>Dataset for published paper:</p> <p>Attention Modulates Trans-saccadic Integration (2017), Stewart, EEM & Schütz AC, Vision Research</p> <p>https://doi.org/10.1016/j.visres.2017.11.006</p>
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