音像定位能力に対する垂直視運動刺激の影響 The Effect of Vertical Optokinetic Stimulation on Orientation of Sound Lateralization

この論文にアクセスする

この論文をさがす

著者

抄録

Using dichotic sound, the effects of optokinetic vertical stimulation on the orientation of horizontal sound lateralization was investigated in 10 healthy subjects. Subjects were given vertical optokinetic (OK) stimulation, and interaural time differences (ITD) and interaural intensity differences (IID) were discriminated, respectively. At a light stripes velocity of 90°/sec, the amplitudes for the ITD discrimination tests during OK stimulation were significantly greater than those before the beginning of OK stimulation, those at a light stripes velocity of 30°/sec, and those at a light stripes accelerated velocity of 4°/sec<SUP>2</SUP> (P<0.05). On the other side, at a light stripes velocity of 90°/ sec, the amplitudes for the IID discrimination tests during OK stimulation were only significantly greater than those at a light stripes accelerated velocity of 4°/sec<SUP>2</SUP> (P<0.05). The median line of amplitude for both ITD and IID discrimination tests did not shift at a light stripes velocity of 30°/sec, 90°/sec, and 4°/sec<SUP>2</SUP>. The present study demonstrated that sound horizontal lateralization sensitivity may be influenced by vertical OK stimulation. These findings also suggest that horizontal sound lateralization is more dependent on high-speed vertical OK stimulation than low-speed vertical OK stimulation. Therefore, we hypothesized that there is some interaction between the subcortical pathway of high-speed vertical OK stimulation and the sound lateralization pathway. The results of the present study will help in the understanding of space perception, comprising multiple sensory inputs.

収録刊行物

  • Equilibrium research  

    Equilibrium research 65(4), 223-228, 2006-08-01 

    Japan Society for Equilibrium Research

参考文献:  22件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10021289491
  • NII書誌ID(NCID)
    AN00001485
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03855716
  • データ提供元
    CJP書誌  J-STAGE 
ページトップへ