This work aims to integrate Byrne’s theory of visual salience computation
(2006) with Salvucci’s model of eye movements (2001) by testing participants on a
visual search task similar to Findlay (1997). By manipulating the number, salience,
and spacing of targets, participants exhibited the global effect averaging phenomena
during the first recorded saccade, whereby short‐latency saccades land in between
adjacent objects. Previous work has argued that the saccadic targeting system
causing the averaging is influenced both by the salience and arrangement of objects
displayed (Rao, Zelinsky, Hayho, & Ballard, 2002). However, to accurately account
for these results, we did not have to couple the salience system with the saccadic
targeting system. Instead, the systems work sequentially and in isolation, whereby
the salience system simply hands off the next object to examine to the targeting
system, whose accuracy depends only on saccadic latency and the location of the
targeted and non‐targeted items.
| Identifer | oai:union.ndltd.org:RICE/oai:scholarship.rice.edu:1911/27362 |
| Date | January 2009 |
| Creators | Stanley, Clayton |
| Contributors | Michael D. Byrne |
| Source Sets | Rice University |
| Language | English |
| Detected Language | English |
| Type | Thesis, Text |
| Format | 89 p., application/pdf |
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