Objective determination of backward masking

Autor: Al Yonovitz, Silas Smith
Rok vydání: 2017
Předmět:
Zdroj: The Journal of the Acoustical Society of America. 141:3896-3896
ISSN: 0001-4966
DOI: 10.1121/1.4988750
Popis: Backward Masking (BM) functions have been shown to relate to age, lead toxicity, and are differentiated in children with language disorders. These functions may be indicative of auditory processing deficits. This study investigated if Evoked Potentials (EP) could be utilized to obtain BM functions. A tonal stimulus, followed by an inter-stimulus interval (ISI) and a noise masker was the EP stimulus. All were studied individually in the appropriate temporal alignment. ISI”s of various durations to derive the BM function middle, and late auditory evoked potentials. This study randomly presented four different stimulus conditions, 1) tone alone, 2) noise alone, 3) tone and noise, and 4) silence. With a long inter-trial interval (1 sec) and high sample rate (31250 Hz) EP’s were obtained for 4000 trials. The stimuli were pure-tones (1000 Hz, 10 msec. duration with a Blackman function and noise bursts of varying intensity. Agreement was found for the behavioral and electrophysiological task. Results indicated t...
Databáze: OpenAIRE
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