Journal: eLife
Article Title: Columnar processing of border ownership in primate visual cortex
doi: 10.7554/eLife.72573
Figure Lengend Snippet: ( A ) Top row shows set of border ownership stimuli. Black dotted outline represents the classical receptive field (cRF). Bottom row shows that the stimulus information in the cRF is identical for stimuli 1 and 2, and for stimuli 3 and 4. ( B ) Dot rasters showing responses to the stimuli in A from a border ownership-selective well-isolated unit. The symbol on the left indicates the preferred side of border ownership for the unit. Average spike rates in the stimulus window are indicated above the panels. ( C, D ) Similar to A and B, for a multiunit cluster recorded during a different penetration. ( E ) Cartoon showing the recording setup. A laminar multielectrode probe with 32 channels was lowered through a transparent artificial dura (AD), orthogonal relative to the cortical surface. ( F ) Laminar compartments (superficial; granular [input]; deep layers) were estimated using current source density (CSD) analysis. See text for definitions of the compartments and explanation of symbols. Distance from center of granular layer is shown along ordinate on the left, and the number of electrode contact on the right (higher numbers correspond to more superficial contacts). Black solid triangle indicates position of most superficial electrode contact on which multiunit activity was recorded. Data are from the same penetration during which the unit in B was recorded. The position of the green symbol indicates that this unit was positioned in the deep layers. See also – . ( G ). Similar to F, for the penetration during which the unit shown in D was recorded. ( H ) Receptive field contours for multiunit activity recorded on different electrode contacts from the penetration shown in F. Contours are drawn at z = 3. Orthogonality of the penetration was evaluated by fitting a line through the centers of the receptive field contours and computing D , the distance between pairs of azimuth and elevation coordinates of receptive field centers per mm depth (Methods). ( I ) Similar to H, for the penetration shown in G.
Article Snippet: A linear multielectrode probe (32-channel single-shaft acute probes, 100 μm electrode pitch [ATLAS Neuroengineering, Leuven, Belgium]) was mounted on the chamber using a hydraulic microdrive on an adjustable x – y stage (MO-972A, Narashige, Japan).
Techniques: Isolation, Activity Assay
![( A ) Top row shows set of border ownership stimuli. Black dotted outline represents the classical receptive field (cRF). Bottom row shows that the stimulus information in the cRF is identical for stimuli 1 and 2, and for stimuli 3 and 4. ( B ) Dot rasters showing responses to the stimuli in A from a border ownership-selective well-isolated unit. The symbol on the left indicates the preferred side of border ownership for the unit. Average spike rates in the stimulus window are indicated above the panels. ( C, D ) Similar to A and B, for a multiunit cluster recorded during a different penetration. ( E ) Cartoon showing the recording setup. A laminar <t>multielectrode</t> probe with 32 channels was lowered through a transparent artificial dura (AD), orthogonal relative to the cortical surface. ( F ) Laminar compartments (superficial; granular [input]; deep layers) were estimated using current source density (CSD) analysis. See text for definitions of the compartments and explanation of symbols. Distance from center of granular layer is shown along ordinate on the left, and the number of electrode contact on the right (higher numbers correspond to more superficial contacts). Black solid triangle indicates position of most superficial electrode contact on which multiunit activity was recorded. Data are from the same penetration during which the unit in B was recorded. The position of the green symbol indicates that this unit was positioned in the deep layers. See also – . ( G ). Similar to F, for the penetration during which the unit shown in D was recorded. ( H ) Receptive field contours for multiunit activity recorded on different electrode contacts from the penetration shown in F. Contours are drawn at z = 3. Orthogonality of the penetration was evaluated by fitting a line through the centers of the receptive field contours and computing D , the distance between pairs of azimuth and elevation coordinates of receptive field centers per mm depth (Methods). ( I ) Similar to H, for the penetration shown in G.](https://pub-med-central-images-cdn.bioz.com/pub_med_central_ids_ending_with_1947/pmc08631947/pmc08631947__elife-72573-fig1.jpg)
