Selective attentional processes in cochlear implant recipients: Measurements of the attentional filter
Christofer Bester, Dona MP Jayakody, Geoffrey Hammond, Donald Robertson
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | ACOUSTICAL SOC AMER AMER INST PHYSICS | Published : 2016
In normal hearing subjects, detection of near-threshold tones in noise is influenced by signal certainty. Thus, tones that are presented more frequently than others, and/or are preceded by a clearly audible cue tone of the same frequency (target tones) are detected better than other tones (probe tones). This auditory attentional filter was examined in six cochlear implant (CI) recipients, using acoustic stimuli and direct programmed electrode stimulation. Three of the subjects showed no evidence of an attentional filter. Three subjects showed a relatively higher detection rate of the target frequency or electrode stimulated during the attentional task, and in two of these subjects the target..View full abstract
Supported by grants from the National Health and Medical Research Council, Medical and Health Research Infrastructure Fund, and The University of Western Australia. C.B. was the recipient of an Australian Postgraduate Award. The authors thank P. Busby and Cochlear Ltd. for generous technical assistance and advice. We are grateful to an anonymous reviewer for extensive comments on an earlier version of this paper.