Comparison of Block and Event-Related fMRI Designs in Evaluating the Word-Frequency Effect

Human Brain Mapping 18:186 –193(2003)

Fox School of Business Research Paper

8 Pages Posted: 14 May 2014

See all articles by Michael Chee

Michael Chee

Duke-NUS Graduate Medical School Singapore

Vinod Venkatraman

Temple University - Department of Marketing and Supply Chain Management; Temple University - Decision Neuroscience

Christopher Westphal

Duke-NUS Graduate Medical School Singapore

Chun-Siong Soon

Duke-NUS Graduate Medical School Singapore

Date Written: July 31, 2002

Abstract

Printed word frequency can modulate retrieval effort in a task requiring associative semantic judgment. Event-related fMRI, while avoiding stimulus order predictability, is in theory statistically less powerful than block designs. We compared one event-related and two block designs that evaluated the same semantic judgment task and found that similar brain regions demonstrated the word frequency effect. Although the responses were lower in amplitude, event-related fMRI was able to detect the word frequency effect to a comparable degree compared to the block designs. The detection of a frequency effect with the event-related design also suggests that stimulus-order predictability may not be as serious a concern in block designs as might be supposed.

Keywords: fMRI, design methods, language, semantics, word frequency

Suggested Citation

Chee, Michael and Venkatraman, Vinod and Westphal, Christopher and Soon, Chun-Siong, Comparison of Block and Event-Related fMRI Designs in Evaluating the Word-Frequency Effect (July 31, 2002). Human Brain Mapping 18:186 –193(2003); Fox School of Business Research Paper. Available at SSRN: https://ssrn.com/abstract=2430387

Michael Chee (Contact Author)

Duke-NUS Graduate Medical School Singapore ( email )

Singapore
Singapore

Vinod Venkatraman

Temple University - Department of Marketing and Supply Chain Management ( email )

Philadelphia, PA 19122
United States

Temple University - Decision Neuroscience ( email )

Philadelphia, PA 19122
United States

Christopher Westphal

Duke-NUS Graduate Medical School Singapore

Singapore
Singapore

Chun-Siong Soon

Duke-NUS Graduate Medical School Singapore

Singapore
Singapore

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