Saccade Target Selection In Chinese Reading

In daily life,in order to improve their reading efficiency,people will constantly make eye jumps to make our gaze point fall in the fovea.Yan(et al.)discovered the PVL curve in Chinese reading.When there is only one fixation,PVL reaches a peak near the word center,while when there are multiple fixations in the first reading,the peak is reached at the first fixation.Li(et al.)believe that when the gaze point is located at the word center,all words in Chinese words will be processed,and readers can quickly decide to jump into the word center without knowing the word boundary.Liu(et al.)proposed the dynamic adjustment hypothesis,which holds that saccade occurs when the eye moves to the observation position providing maximum processing efficiency.In this study,we discussed whether the target selection of saccade is related to word segmentation in the sub-fovea region.Low-level word length information and high-level predictive information are selected to cover up the sub-fovea information by reducing the spatial frequency(fuzzy presentation).Incremental display paradigm is used to manipulate the length of words and the effectiveness of the sub-fovea information.At the same time,it is further studied whether the loss of visual ability caused by normal aging will affect the ability of the elderly to obtain abnormal text information during reading.In the experiment,the visual acuity of young and old people was tested.After the visual information could be obtained equally clearly,whether there were differences in eye movement characteristics in reading between young and old people was studied.The results show that there are a typical age effect,word length effect and predictive effect in Chinese reading;The Preferred viewing location effect exists in Chinese readers,but the patterns of the elderly and the young are different;Chinese readers adopt a flexible processing method while the elderly adopt a more cautious reading strategies.Word length and predictive effect affect Chinese reading vocabulary processing,but there is no relationship between word segmentation and saccade target selection.