کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5739356 1615549 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research PaperAltered attentional filters in subjects with graded levels of sensorineural hearing loss
ترجمه فارسی عنوان
مقاله پژوهشی فیلترهای توجه شده در افراد با سطوح مختلف کاهش شنوایی حس گرایی
کلمات کلیدی
فیلتر توجه افت شنوایی حساس به نور، روش سیگنال پروب، فیلتر شنوایی
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی سیستم های حسی
چکیده انگلیسی


- Attentional filters were determined with a cued probe-signal method.
- Auditory cues evoke a transient attentional process.
- Probe detection is affected by hearing level in normal-hearing listeners.
- Attentional filters are perturbed in SNHL.
- Low- and high-frequency probes are differentially affected by hearing level in SNHL.

Near-threshold tones (targets) in noise that are preceded by cues of the same frequency or occur with a high probability are detected better than tones of other frequencies that may occur with a lower probability (probes); the better detection of targets than probes defines the attentional filter. We measured attentional filters using a cued probe-signal procedure with a two-interval forced-choice (2IFC) method in normal-hearing subjects (N = 15) and subjects with sensorineural hearing loss (SNHL; N = 14) with a range of hearing levels. Attentional filters were altered in SNHL subjects, who detected low-frequency probes as well as targets at all hearing levels and who detected high-frequency probes increasingly well with increasing hearing level. These effects were present in both intervals of the 2IFC procedure. As auditory filters measured psychophysically are typically asymmetric in subjects with SNHL, these results suggest that the signal frequencies affected by the attentional filter are governed by the shapes of the auditory filters at and around the cue frequency. The normal-hearing subjects showed the expected attentional filters in the first interval and shallower filters in the second interval, suggesting that the cue-evoked attentional process is transient. In the first interval, both low- and high-frequency probes were detected better as hearing level increased over a narrow range (from −5 to 10 dB at the target frequency), with a resultant loss of attentional filtering. This finding adds to observations of variable auditory function in individuals with clinically normal hearing thresholds established by audiometry.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hearing Research - Volume 351, August 2017, Pages 80-87
نویسندگان
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