Encoding of target and singleton distractor locations in FEF and LIP.
<p>(A<b>)</b> Decoding accuracy of target and singleton locations calculated in the 150–200 ms interval after array onset in singleton present displays (example shown on the left). Violin plots show the distribution of decoding accuracies calculated over 50 resamples across differe...
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2025
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| Summary: | <p>(A<b>)</b> Decoding accuracy of target and singleton locations calculated in the 150–200 ms interval after array onset in singleton present displays (example shown on the left). Violin plots show the distribution of decoding accuracies calculated over 50 resamples across different trials. The dashed horizontal line indicates chance accuracy. Decoding was carried out across the 3 left hemifield and 2 vertical meridian locations, thus chance was at 20%. Crosses indicate the mean of each distribution. Stars above each distribution show significant accuracy relative to chance (permutation test, <i>p</i> < 0.001). Stars over horizontal bars indicate difference between areas (permutation test, <i>p</i> < 0.001). To allow for comparison between areas, the number of units was stratified prior to accuracy calculation (50 resamples). (B<b>)</b> Selectivity of FEF units to target and singleton location as quantified by the PEV metric, calculated in the 150–200 ms interval after array onset. Units were characterized as target selective (green), singleton selective (blue), mixed selective (yellow), or non-selective (black). Significant selectivity was determined as z-scored PEV > 1.645 (one-tailed test). <b>(</b>C<b>)</b> Same as in B, but for LIP. Source data are available at <a href="https://zenodo.org/records/14577061" target="_blank">https://zenodo.org/records/14577061</a>. FEF, frontal eye field; LIP, lateral intraparietal; PEV, percentage of explained variance.</p> |
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