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Original Article

Binaural Interaction of a Beating Frequency-Following Response

, , , &
Pages 36-43 | Published online: 07 Jul 2009
 

Abstract

Frequency-following responses to 500-Hz tone bursts presented to the left ear and 540-Hz tone bursts presented to the right ear were recorded from human subjects. Recordings were made both under monaural and binaural conditions. The responses summed over monaural conditions (for left and right ear stimulation) were larger than the responses obtained in the binaural condition. This binaural interaction shows that the frequency-following response reflects binaural processing probably occurring at or below the level of the inferior colliculi.

Nous avons enregistré chez un certain nombre de sujets normaux les réponses reproduisant la fréquence (FFR) à des «tone-bursts» de 500 Hz, présentés à l'oreille gauche et des «tone-bursts» de 540 Hz présentés à l'oreille droite, dans des conditions soit monaurales, soit binaurales. Les réponses ont présenté une amplitude plus grande dans les conditions monaurales que dans les conditions binaurales. Il semble done exister une interaction binaurale qui montre que la réponse FFR reflète un processus binaural intervenant au niveau ou au-dessous des colliculi inférieurs.

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