NDLI: p2933 Distractor ratio influences patterns of eye movements during visual search (1999)

Please wait, while we are loading the content...

p2933 Distractor ratio influences patterns of eye movements during visual search (1999)

Content Provider	CiteSeerX
Author	Pomplun, Marc Shen, Jiye Reingoldô, Eyal M.
Abstract	Abstract. We examined the flexibility of guidance in a conjunctive search task by manipulating the ratios between different types of distractors. Participants were asked to decide whether a target was present or absent among distractors sharing either colour or shape. Results indicated a strong effect of distractor ratio on search performance. Shorter latency to move, faster manual response, and fewer fixations per trial were observed at extreme distractor ratios. The distribution of saccadic endpoints also varied flexibly as a function of distractor ratio. When there were very few same-colour distractors, the saccadic selectivity was biased towards the colour dimension. In contrast, when most of the distractors shared colour with the target, the saccadic selectivity was biased towards the shape dimension. Results are discussed within the framework of the guided search model. How 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 similarity (Duncan and Humphreys 1989), target eccentricity (Carrasco et al 1995; Scialfa
File Format	PDF
Publisher Date	1999-01-01
Access Restriction	Open
Subject Keyword	Search Target Human Observer Colour Dimension Strong Effect Visual Search Conjunctive Search Task Distractor Ratio Stimulus Similarity Same-colour Distractors Saccadic Endpoint Search Efficiency Red O Eye Movement Shorter Latency Manual Response Saccadic Selectivity Search Performance Target Eccentricity Shape Dimension Extreme Distractor Ratio Guided Search Model Green X P2933 Distractor Ratio Influence Pattern
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in