Angular Distribution for Eye and Head Movements

Distribution of gaze shift angles during scene viewing. Indoor and outdoor scenes were viewed for ten seconds through gaze-contingent windows controlled by either the eye or the head. Windows could be Open (no window), Square (equal horizontal and vertical span), Horizontal (greater horizontal span), or Vertical (greater vertical span). Gaze shift angles were classified into 16 equal pi/8 bins, and the data indicate the proportion of shifts in each bin. In addition, angles were more broadly classified as horizontal (+/- 3pi/16 from the horizontal axis) or vertical (+/- 3pi/16 from the vertical axis), and the horizontal bias (H_bias) was calculated as the proportion of horizontal gaze shifts divided by the sum of horizontal and vertical shifts.

场景观看过程中的注视转移角度分布。被试通过由眼部或头部控制的注视依存窗口（gaze-contingent window）观看室内与室外场景，单场景观看时长为10秒。该窗口可分为四种类型：Open（无窗口）、Square（水平与垂直跨度相等）、Horizontal（水平跨度更大）以及Vertical（垂直跨度更大）。注视转移角度被划分为16个均等的π/8区间，数据展示了每个区间内注视转移的占比。此外，角度还被更宽泛地划分为水平（与水平轴偏差±3π/16）或垂直（与垂直轴偏差±3π/16）类别；水平偏向性（H_bias）的计算方式为水平注视转移的占比除以水平与垂直注视转移占比之和。