L. Ramig

Publications143
h-index51
Citations9,328
Highly Influential Citations547
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Suitability of Dysphonia Measurements for Telemonitoring of Parkinson's Disease
TLDR
A new measure of dysphonia, pitch period entropy (PPE), is introduced, which is robust to many uncontrollable confounding effects including noisy acoustic environments and normal, healthy variations in voice frequency, and is well suited to telemonitoring applications. Expand
Intensive voice treatment (LSVT®) for patients with Parkinson's disease: a 2 year follow up
TLDR
The findings provide evidence for the efficacy of the LSVT® as well as the long term maintenance of these effects in the treatment of voice and speech disorders in patients with idiopathic Parkinson's disease. Expand
Review: Occupational risks for voice problems
The purpose of this paper is to provide a cohesive review of the literature regarding the functional consequences of voice problems and occupational risk factors for them. The salient points are as… Expand
Formant centralization ratio: a proposal for a new acoustic measure of dysarthric speech.
TLDR
The present findings indicate that the FCR is a sensitive, valid, and reliable acoustic metric for distinguishing dysarthric from unimpaired speech and for monitoring treatment effects, probably because of reduced sensitivity to interspeaker variability and enhanced sensitivity to vowel centralization. Expand
Novel Speech Signal Processing Algorithms for High-Accuracy Classification of Parkinson's Disease
TLDR
It is found that some of the recently proposed dysphonia measures complement existing algorithms in maximizing the ability of the classifiers to discriminate healthy controls from PD subjects, and are seen as an important step toward noninvasive diagnostic decision support in PD. Expand
Accurate Telemonitoring of Parkinson's Disease Progression by Noninvasive Speech Tests
Tracking Parkinson's disease (PD) symptom progression often uses the unified Parkinson's disease rating scale (UPDRS) that requires the patient's presence in clinic, and time-consuming physical… Expand
Comparison of two forms of intensive speech treatment for Parkinson disease.
TLDR
Investigation of the effect of two forms of intensive speech treatment on the speech and voice deficits associated with idiopathic Parkinson disease suggests intensive voice and respiration treatment is more effective than respiration (R) treatment alone for improving vocal intensity and decreasing the impact of Parkinson disease on communication. Expand
Changes in vocal loudness following intensive voice treatment (LSVT®) in individuals with Parkinson's disease: A comparison with untreated patients and normal age‐matched controls
TLDR
Differences in SPL between the treated and untreated patients at post‐treatment and follow‐up were statistically significant for all voice and speech tasks, and provide additional support for the efficacy of the LSVT®. Expand
Effects of intensive voice treatment (the Lee Silverman Voice Treatment [LSVT]) on vowel articulation in dysarthric individuals with idiopathic Parkinson disease: acoustic and perceptual findings.
TLDR
The results of this study add further support to the generalized therapeutic impact of intensive voice treatment on orofacial functions (speech, swallowing, facial expression) and respiratory and laryngeal functions in individuals with PD. Expand
Nonlinear speech analysis algorithms mapped to a standard metric achieve clinically useful quantification of average Parkinson's disease symptom severity
TLDR
This study supports the viability of frequent, remote, cost-effective, objective, accurate UPDRS telemonitoring based on self-administered speech tests, and proposes a number of novel, nonlinear signal processing algorithms which reveal pathological characteristics in PD more accurately than existing approaches. Expand
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