Change detection and difference detection of tone duration discrimination

Shuntaro Okazaki, Shin'ichiro Kanoh, Kana Takaura, Minoru Tsukada, Kotaro Oka

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


An event-related potential called mismatch negativity is known to exhibit physiological evidence of sensory memory. Mismatch negativity is believed to represent complicated neuronal mechanisms in a variety of animals and in humans. We employed the auditory oddball paradigm varying sound durations and observed two types of duration mismatch negativity in anesthetized guinea pigs. One was a duration mismatch negativity whose increase in peak amplitude occurred immediately after onset of the stimulus difference in a decrement oddball paradigm. The other exhibited a peak amplitude increase closer to the offset of the longer stimulus in an increment oddball paradigm. These results demonstrated a mechanism to percept the difference of duration change and revealed the importance of the end of a stimulus for this perception.

Original languageEnglish
Pages (from-to)395-399
Number of pages5
Issue number4
Publication statusPublished - 2006 Jun 21


  • Auditory perception
  • Discrimination
  • Event-related potentials
  • Mismatch negativity
  • Quinea pigs

ASJC Scopus subject areas

  • Neuroscience(all)


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