Journal: Scientific Reports

Article Title: Microsaccades mediate perceptual alternations in Monet’s “Impression, sunrise”

doi: 10.1038/s41598-021-82222-3

Figure Lengend Snippet: Microsaccade dynamics before transitions toward perceptual intensification versus fading. Average probability of microsaccades before transitions toward perceptual intensification (red) versus fading (blue) for ( A ) Monet’s sun and ( B ) a Gabor patch. The solid vertical line indicates the reported transitions (time = 0). The grey dashes along the top of the plots indicate the bins where microsaccade rates before transitions to intensification were significantly higher than microsaccade rates before transitions to fading (two-tailed paired t tests with Bonferroni correction, bin size = 20 ms, p < 0.05). Red and blue shading indicates the SEM across subjects (N = 22). Because trials from the two conditions were interleaved, both panels show data from the same participants, collected during the same sessions.

Article Snippet: We demonstrated that the relationship between microsaccade production and the reversal and prevention of Troxler fading applies not only to the viewing of contrived stimuli such as Gabor patches, but also to the observation of Monet’s masterpiece.

Techniques: Two Tailed Test

Journal: Journal of Neurophysiology

Article Title: Motion integration is anisotropic during smooth pursuit eye movements

doi: 10.1152/jn.00591.2018

Figure Lengend Snippet: A: the aperture problem. When a rigid object (i.e., the wavy black shape) is seen moving through a small window (i.e., holes on a semitransparent screen), its local motion is ambiguous, due to the lack of 2-dimensional features. The object global motion (red arrow) can be recovered by integrating local motion vectors orthogonal to the contours across space (blue arrows). B: stimulus used to simulate rigid object motion behind multiple circular windows. Gabor elements were randomly oriented and could drift at speeds that were only compatible with one global motion direction. Dashed lines were not shown. C: in velocity space, if the object motion is rigid, every motion vector length is determined by its orientation relative to the global motion direction, forming a circle. D: eye movement conditions. The observers either fixated a central dot or pursued it as it moved horizontally across the screen. The gratings drifted in the middle of the trajectory for 200 ms (cf. Fig. 2A), but the envelopes of the Gabor patches always moved at the same velocity as the target. If tracking were perfect, retinal motion would be the same in fixation and pursuit conditions.

Article Snippet: The multiple-aperture Gabor array ( Amano et al. 2009 ) shown in was composed of a grid of 744 Gabor patches displayed within two notional concentric circles around a 0.3° fixation point.

Techniques: Plasmid Preparation

Journal: Journal of Neurophysiology

Article Title: Motion integration is anisotropic during smooth pursuit eye movements

doi: 10.1152/jn.00591.2018

Figure Lengend Snippet: Stimulation time course in experiment 1. A: horizontal target position (top) and velocity (middle and bottom) are shown superimposed on the global motion (colored lines) of the grating pattern that was displayed behind multiple windows or apertures. The gratings moved with the pursuit target (or remained static during fixation) except for a 200-ms interval that is indicated by the dashed vertical lines. During this interval, the global motion speed of the gratings was ±2 deg/s relative to the target speed (5.72 deg/s). The blurred window through which each grating was viewed always moved at the same speed as the target (cf. Supplemental Movies S1–S4, https://doi.org/10.25392/leicester.data.7718453.v1). The colored lines refer to the velocity of the grating inside the window. B: unspeeded discrimination task. Gabor motion was either in the direction of pursuit (green arrows) or opposite to it (red arrows) and slightly upward or downward. At the end of the trial, observers reported whether they saw upward or downward global motion. C: composition of grating speeds to generate coherent global motion. Signal and noise velocity distribution are shown in velocity space. Signal gratings’ drift speed was compatible with either an upward (+10°; saturated color) or downward (−10°; unsaturated color) global motion component. The orientation of the global motion velocity vector relative to the horizontal is shown to scale. Observers discriminated vertical component direction at different levels of coherence (i.e., different amounts of signal relative to noise gratings).

Article Snippet: The multiple-aperture Gabor array ( Amano et al. 2009 ) shown in was composed of a grid of 744 Gabor patches displayed within two notional concentric circles around a 0.3° fixation point.

Techniques: Plasmid Preparation

Journal: Frontiers in Systems Neuroscience

Article Title: Matching Pursuit Analysis of Auditory Receptive Fields' Spectro-Temporal Properties

doi: 10.3389/fnsys.2017.00004

Figure Lengend Snippet: PCA results .

Article Snippet: Spectro-temporal STRF and Gabor features outperform reference spectral MFCCs in quiet and in low noise conditions (down to 0 dB signal to noise ratio).

Techniques:

Journal: Frontiers in Systems Neuroscience

Article Title: Matching Pursuit Analysis of Auditory Receptive Fields' Spectro-Temporal Properties

doi: 10.3389/fnsys.2017.00004

Figure Lengend Snippet: PCA results . Cumulative variance explained by the PCA components plotted against the number of feature dimensions used. Since STRF, Gabor, and estimated Gabor feature spaces have different dimensionalities, values along the abscissa are relative. The abscissa is log-scaled to better visualize the interesting region of low dimensionality.

Article Snippet: Spectro-temporal STRF and Gabor features outperform reference spectral MFCCs in quiet and in low noise conditions (down to 0 dB signal to noise ratio).

Techniques:

Journal: Frontiers in Systems Neuroscience

Article Title: Matching Pursuit Analysis of Auditory Receptive Fields' Spectro-Temporal Properties

doi: 10.3389/fnsys.2017.00004

Figure Lengend Snippet: Dimensionality analysis of STRF patterns . Number of Gabor atoms needed to reconstruct STRFs with θ = 0.8 in matching pursuit.

Article Snippet: Spectro-temporal STRF and Gabor features outperform reference spectral MFCCs in quiet and in low noise conditions (down to 0 dB signal to noise ratio).

Techniques: