Nonverbal auditory working memory: Can music indicate the capacity?

Eunju Jeong, Hokyoung Ryu

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Different working memory (WM) mechanisms that underlie words, tones, and timbres have been proposed in previous studies. In this regard, the present study developed a WM test with nonverbal sounds and compared it to the conventional verbal WM test. A total of twenty-five, non-music major, right-handed college students were presented with four different types of sounds (words, syllables, pitches, timbres) that varied from two to eight digits in length. Both accuracy and oxygenated hemoglobin (oxyHb) were measured. The results showed significant effects of number of targets on accuracy and sound type on oxyHb. A further analysis showed prefrontal asymmetry with pitch being processed by the right hemisphere (RH) and timbre by the left hemisphere (LH). These findings suggest a potential for employing musical sounds (i.e., pitch and timbre) as a complementary stimuli for conventional nonverbal WM tests, which can additionally examine its asymmetrical roles in the prefrontal regions.

Original languageEnglish
Pages (from-to)9-21
Number of pages13
JournalBrain and Cognition
Volume105
DOIs
StatePublished - 1 Jun 2016

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government ( NRF-2014R1A2A2A01002583 ).

Publisher Copyright:
© 2016 Elsevier Inc.

Keywords

  • Hemodynamic responses
  • Nonverbal auditory working memory
  • Pitch
  • Test development and validation
  • Timbre

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