Jiye Shen

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The Area Activation Model (Pomplun, Reingold, Shen, & Williams, 2000) is a computational model predicting the statistical distribution of saccadic endpoints in visual search tasks. Its basic assumption is that saccades in visual search tend to foveate display areas that provide a maximum amount of task-relevant information for processing during the(More)
The distractor-ratio effect refers to the finding that search performance in a conjunctive visual search task depends on the relative frequency of two types or subsets of distractors when the total number of items in a display is fixed. Previously, Shen, Reingold, and Pomplun (2000) examined participants' patterns of eye movements in a distractor-ratio(More)
We present an approach towards a simple, explicit model of saccadic selectivity in visual search tasks. The model in its present state includes weights for target-distractor similarities and fixation field size as its only adjustable parameters. Based on these, the model predicts the statistical distribution of saccadic endpoints for any given visual search(More)
In the present paper, we present a novel gaze-controlled interface. It allows the user to magnify and inspect any part of an image by just looking at the part in question and subsequently shifting gaze to another window. No manual input is required to control this process. The interface was empirically evaluated in a multi-session experiment employing a(More)
The present experiment examined the one-target advantage (OTA) with regard to saccadic eye movements. The OTA, previously found with manual pointing responses, refers to the finding that movements are executed faster when the limb is allowed to stop on the target compared to the situation where it has to proceed and hit a second target. Using an adapted(More)
A cueing paradigm was employed to examine modulation of distraction due to a visual singleton. Subjects were required to make a saccade to a shape-singleton target. A predictive location cue indicated the hemifield where a target would appear. Older adults made more anticipatory saccades than younger adults, and were less accurate for making an eye movement(More)
The current study examined the relation between the difficulty of central discrimination and the efficiency of peripheral selection in visual search tasks. Participants were asked to search for a target among high-, medium-, and low-similarity distractors. In Experiment 1, while the duration of current fixations increased with increasing target-distractor(More)
efficient are human observers in detecting a conjunctively defined search target, for example finding a red X among red Os and green Xs? This issue has been systematically investigated over the past two decades (see Treisman 1988; Wolfe 1998 for a review). Search efficiency has been related to a number of factors, including stimulus Recently, several(More)
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