Event-related brain potentials: Report order and task switch on multidimensional stimuli identification

Kong King Shieh, I. Hsuan Shen*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

1 Scopus citations


An experiment was conducted to evaluate the effect of order of reporting stimulus dimension in multidimensional stimulus identification using a switchtask paradigm. Participants were required to identify each two-dimensional symbol by pushing the corresponding buttons on the keypad on which there were two columns representing the two dimensions, part and shape. The two orders of report were Order Part/Shape and Order Shape/Part. There was a task cue prior to each presentation of a symbol indicating the particular report order the participants should perform. The cue changed randomly. Both behavioral data and event-related potentials were recorded from 12 college students. Analysis of behavioral data showed switch cost indicated by increase in response time was greater for Order Shape/Part, a less appropriate order of reporting dimensional values, than Order Part/Shape (88 msec, vs 9 msec. for response time for the first stimulus dimension; 96 msec. vs -1 msec, for response time total). Neural activities under Order Shape/Part and Order Part/Shape were different, and it seems plausible that participants put more effort into selection and showed more related semantic activation in Order Shape/Part than in Order Part/ Shape which fits the Chinese adjective-then-noun language habit.

Original languageEnglish
Pages (from-to)905-918
Number of pages14
JournalPerceptual and Motor Skills
Issue number3
StatePublished - 06 2006


Dive into the research topics of 'Event-related brain potentials: Report order and task switch on multidimensional stimuli identification'. Together they form a unique fingerprint.

Cite this