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What is Visual Stimulus

Chapter 61
Encyclopedia of Information Science and Technology, Second Edition
A stimulus normally in the form of a picture or color shown on screen, which usually is used to evoke a VEP.
Published in Chapter:
Biometric Paradigm Using Visual Evoked Potential
Cota Navin Gupta (University of Essex, UK) and Ramaswamy Palaniappan (University of Essex, UK)
Copyright: © 2009 |Pages: 7
DOI: 10.4018/978-1-60566-026-4.ch061
Abstract
Recognizing humans based upon one’s intrinsic physical or behavioral traits has been gaining acceptance and is termed as biometrics. It involves either confirmation or denial of the identity that the user is claiming. It is especially important in ensuring security for access to highly restricted areas (for example: accessing classified documents, control gates and defence related applications). This chapter will discuss the use of brain signals at an application level exploiting the evoked potential approach for biometrics.
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