本研究針對Hering和Wundt兩種錯視圖形，進行追隨眼動之視線軌跡變化的觀察與分析，其研究目的包括：(1)紀錄並觀察直線與Hering和Wundt兩類錯視圖形，在視覺追隨眼動之軌跡分佈的差異。(2)探究人在視線的追隨運動上，是否受到Hering和Wundt錯視圖形誘發背景的影響而產生視軌跡改變。實驗採用受測者內設計，受測者觀看在Hering和Wundt錯視圖形上移動的紅點目標影片，透過眼動儀及SuperLab實驗控制軟體等設備，記錄並分析受試者觀看實驗圖形的視線軌跡的變化。實驗分析方法將眼動數據資料以Fitting線性方程式的概念計算，比較其殘差平方和之數值，可瞭解受試者視線軌跡分佈的趨勢。研究發現如下：(1)觀看Hering錯視圖形之視線軌跡在經Fitting曲線方程式計算後，其殘差平方和數值小於Fitting直線方程式的殘差數值，顯示視軌跡的數據較接近真實上的曲線，因此可證明Hering錯視圖形的視線軌跡呈現彎曲的分佈的現象。(2)Wundt錯視圖形在Fitting直線與曲線方程式後的殘差值接近，顯示出有可能因錯視量的大小而影響到視線軌跡分佈的弧度。初步推論人在觀看直線變化的錯視圖形時，知覺對於視覺的控制與「知覺和行為的分離現象」有所不同，視覺與知覺是相互影響形成了錯視，並影響了視覺追隨運動，並使得眼球的常態運動產生改變。
In the present research, we investigated which guides the pursuit eye movements, physical stimuli or visual illusions, for moving targets along the illusory curves of Hering and Wundt figures. A video eye tracker (View Point PC60) was used to record the eye movements during observers pursuing a target which was composed by a red dot moving along a Hering or Wundt illusory curve, which is actually a straight line but perceived as a curve due to the radial background. The scanning path of pursuing targets moving along a real curve with same curvature as the illusory curve, and a straight line, were also recorded for comparisons. The results showed that the recorded scanning paths of pursuing a target moving along the illusory curve were closer to the scanning paths of pursuing a curve than to the scanning paths of pursuing a straight line. The findings are consistent with our previous research using Muller-Lyer illusory patterns, and suggest that the visual illusion guides the pursuit eye movements in those cases. Pursuit eye movements may be guided by the WHAT rather than by the HOW visual information processing streams
