Browsing by Author "Karaman-Demirel, Aysenur"

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Citation Count: 2
Psychoacoustic abilities in pediatric cochlear implant recipients: The relation with short-term memory and working memory capacity
(Elsevier Ireland Ltd, 2022) Kose, Busra; Karaman-Demirel, Aysenur; Ciprut, Ayca
Objective: The aim was to investigate school-age children with cochlear implants (CIs) and their typically developing peers in terms of auditory short-term memory (ASTM), auditory working memory (AWM), visuospatial short-term memory (VSTM), visuospatial working memory (VWM), spectral resolution and monosyllabic word recognition in noise.Methods: Twenty-three prelingually deaf CI users and twenty-three typically developing (TD) peers aged 7-10 years participated. Twelve children with CI were earlier-implanted (i.e., age at implantation <= 24 months). Children with CIs were compared to typically developing peers and correlations between cognitive and psychoacoustic abilities were computed separately for the groups. Besides, regression analyses were conducted to develop models that could predict SMRT (spectral-temporally modulated ripple test) and speech recognition scores.Results: The AWM scores of the later-implanted group were significantly lower than both earlier-implanted and TD groups. ASTM scores of TD children were significantly higher than both earlier-implanted and laterimplanted participants. There was no statistically significant difference between groups in terms of VSTM and VWM. AWM performance was positively correlated with ASTM, SMRT scores, and speech recognition under noisy conditions for pediatric CI recipients. The AWM was a statistically significant predictor of the SMRT score and the SMRT score was an indicator of speech recognition score under 0 dB SNR condition.Conclusion: Most of children using CI are at risk for clinically remarkable deficits across cognitive abilities such as AWM and ASTM. While evaluating cognitive and psychoacoustic abilities in the clinic routine, it should be kept in mind that they can be influenced by each other.
Citation Count: 0
Sound quality perception of cochlear implant recipients: low-frequency information and foreign-language effect
(Taylor & Francis Ltd, 2022) Arslan, Niyazi Omer; Akbulut, Ahmet Alperen; Kose, Busra; Karaman-Demirel, Aysenur; Derinsu, Ufuk
Objective This study aimed to adapt a method used in sound quality measurements named CI-MUSHRA (the multiple stimuli with hidden reference and anchor for cochlear implant users) to the Turkish language. The effect of low-frequency information and non-native musical stimuli on sound quality perception was investigated. Design Subjects completed the Turkish version of the MUSHRA test, called TR-MUSHRA, and the original CI-MUSHRA test. Participants also completed the Turkish monosyllabic word recognition test and the spectral temporal modulated ripple test (SMRT). Study sample 19 cochlear implant (CI) users and 16 normal-hearing (NH) adults were included. Results CI users demonstrated a lack of ability to detect the sound quality differences between original stimuli and stimuli with omitted low-frequency information up to 600 Hz in both tests. There was no significant main effect of the test version on sound quality ratings for the two groups. No significant correlation was found between mean sound quality scores, SMRT, and speech recognition in quiet and noise conditions. Conclusions Our study suggests that CI users perform poorly in discriminating high-pass filtered musical sounds regardless of the language of the musical stimuli. The TR-MUSHRA can be used as a reliable research tool to evaluate the perceived sound quality.