Vivian Iliadou
Dr Vasiliki (Vivian)Maria Iliadou is an Associate Professor of Psychoacoustics at the Medical School of Aristotle University of Thessaloniki, Greece. She is an ENT physician with a PhD in Audiology. She has attended the second A.C. HOLLAND Course on Basic Sciences in Audiology & Otoneurology in Ferrara,Italy 1998. She has participated in numerous international seminars & congresses in Audiology, Psychoacoustics and Neurootology. She was a faculty member in “Central Auditory Processing-Current Research and Implications for Clinical Practice” 2009 Masterclass in Advanced Audiology UCL Institute of Hearing & in the Global Perspectives of Central Auditory Processing Conference during AudiologyNOW American Academy of Audiology 2012.
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Papers by Vivian Iliadou
PURPOSE:
To evaluate auditory perception in a group of older adults diagnosed with mild cognitive impairment (MCI).
RESEARCH DESIGN:
A cross-sectional study of auditory perception.
STUDY SAMPLE:
Adults with MCI and adults with no documented cognitive issues and matched hearing sensitivity and age.
DATA COLLECTION:
Auditory perception was evaluated in both groups, assessing for hearing sensitivity, speech in babble (SinB), and temporal resolution.
RESULTS:
Mann-Whitney test revealed significantly poorer scores for SinB and temporal resolution abilities of MCIs versus normal controls for both ears. The right-ear gap detection thresholds on the Gaps-In-Noise (GIN) Test clearly differentiated between the two groups (p < 0.001), with no overlap of values. The left ear results also differentiated the two groups (p < 0.01); however, there was a small degree of overlap ∼8-msec threshold values. With the exception of the left-ear inattentiveness index, which showed a similar distribution between groups, both impulsivity and inattentiveness indexes were higher for the MCIs compared to the control group.
CONCLUSIONS:
The results support central auditory processing evaluation in the elderly population as a promising tool to achieve earlier diagnosis of dementia, while identifying central auditory processing deficits that can contribute to communication deficits in the MCI patient population. A measure of temporal resolution (GIN) may offer an early, albeit indirect, measure reflecting left temporal cortical thinning associated with the transition between MCI and Alzheimer's disease.
Clinical importance of auditory processing disorder (APD) testing is often overlooked and regarded with skepticism given the challenging interpretation of results and the current growing debate of its nature and clinical entity.
Purpose:
Presentation of this case is highly educational as APD is the single clinical manifestation of a large cerebellopontine and internal auditory canal lesion.
Research Design:
A case report.
Data Collection and Analysis:
The patient underwent a standard audiological evaluation with normal results. She was referred for APD evaluation. The APD test battery consisted of speech in babble (SinB), dichotic digits (DD), frequency and duration of pattern sequence testing, Random Gap Detection Test, and gaps in noise. These were followed by otoacoustic emissions testing, auditory brainstem responses (ABR) and magnetic resonance imaging (MRI).
Results:
Her auditory processing results showed deficits in SinB and DD limited to the right ear as well as deficits in temporal processing. Both verbal and nonverbal tests exhibited deficits strictly limited to the right ear, which was in accordance with what she was experiencing as reduced loudness for the incoming sounds on the right ear. This less costly evaluation revealed that there was good reason to assess electrophysiologically the auditory system. ABR showed an abnormal waveform with either missing or severely prolongated wave V (depending on stimulus polarity). Otoacoustic emissions were normal. MRI was then implemented revealing a large cerebellopontine and internal auditory canal lesion.
Conclusions:
This clinical case stresses the importance of testing for APD with a psychoacoustical test battery despite current debate of lack of a gold standard diagnostic approach to APD. In this case, APD diagnosis led to a cerebellopontine lesion identification with extension to the right internal auditory canal. This rare cause of APD demonstrates the efficiency of the current diagnostic test battery in revealing lesional causes of central APD.
PURPOSE:
To evaluate auditory perception in a group of older adults diagnosed with mild cognitive impairment (MCI).
RESEARCH DESIGN:
A cross-sectional study of auditory perception.
STUDY SAMPLE:
Adults with MCI and adults with no documented cognitive issues and matched hearing sensitivity and age.
DATA COLLECTION:
Auditory perception was evaluated in both groups, assessing for hearing sensitivity, speech in babble (SinB), and temporal resolution.
RESULTS:
Mann-Whitney test revealed significantly poorer scores for SinB and temporal resolution abilities of MCIs versus normal controls for both ears. The right-ear gap detection thresholds on the Gaps-In-Noise (GIN) Test clearly differentiated between the two groups (p < 0.001), with no overlap of values. The left ear results also differentiated the two groups (p < 0.01); however, there was a small degree of overlap ∼8-msec threshold values. With the exception of the left-ear inattentiveness index, which showed a similar distribution between groups, both impulsivity and inattentiveness indexes were higher for the MCIs compared to the control group.
CONCLUSIONS:
The results support central auditory processing evaluation in the elderly population as a promising tool to achieve earlier diagnosis of dementia, while identifying central auditory processing deficits that can contribute to communication deficits in the MCI patient population. A measure of temporal resolution (GIN) may offer an early, albeit indirect, measure reflecting left temporal cortical thinning associated with the transition between MCI and Alzheimer's disease.
Clinical importance of auditory processing disorder (APD) testing is often overlooked and regarded with skepticism given the challenging interpretation of results and the current growing debate of its nature and clinical entity.
Purpose:
Presentation of this case is highly educational as APD is the single clinical manifestation of a large cerebellopontine and internal auditory canal lesion.
Research Design:
A case report.
Data Collection and Analysis:
The patient underwent a standard audiological evaluation with normal results. She was referred for APD evaluation. The APD test battery consisted of speech in babble (SinB), dichotic digits (DD), frequency and duration of pattern sequence testing, Random Gap Detection Test, and gaps in noise. These were followed by otoacoustic emissions testing, auditory brainstem responses (ABR) and magnetic resonance imaging (MRI).
Results:
Her auditory processing results showed deficits in SinB and DD limited to the right ear as well as deficits in temporal processing. Both verbal and nonverbal tests exhibited deficits strictly limited to the right ear, which was in accordance with what she was experiencing as reduced loudness for the incoming sounds on the right ear. This less costly evaluation revealed that there was good reason to assess electrophysiologically the auditory system. ABR showed an abnormal waveform with either missing or severely prolongated wave V (depending on stimulus polarity). Otoacoustic emissions were normal. MRI was then implemented revealing a large cerebellopontine and internal auditory canal lesion.
Conclusions:
This clinical case stresses the importance of testing for APD with a psychoacoustical test battery despite current debate of lack of a gold standard diagnostic approach to APD. In this case, APD diagnosis led to a cerebellopontine lesion identification with extension to the right internal auditory canal. This rare cause of APD demonstrates the efficiency of the current diagnostic test battery in revealing lesional causes of central APD.