Publications by authors named "Leif Simmatis"

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Global vs. segmental acoustic features for dysarthria assessment in motor neuron diseases.
Mohamed Attia, Leif Simmatis, Ervin Sejdic, Yana Yunusova

Comput Biol Med· December 2025

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EEG biomarkers for Alzheimer's disease: A novel automated pipeline for detecting and monitoring disease progression.
Leif Er Simmatis, Emma E Russo, Tayo Steininger, Haleigh Riddell, Evelyn Chen

J Alzheimers Dis· November 2025

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Differentiating upper- and lower motor neuron diseases using automated acoustic analysis.
Justin Truong, Leif Simmatis, Timothy Pommée, Agessandro Abrahao, Kerry Adams

Amyotroph Lateral Scler Frontotemporal Degener· November 2025

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Methods for Analytical Validation of Novel Digital Clinical Measures: Implementation Feasibility Evaluation Using Real-World Datasets.
Simon Turner, Lysbeth Floden, Leif Simmatis, Piper Fromy, Joss Langford

J Med Internet Res· November 2025

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Towards discovery and implementation of neurophysiologic biomarkers of Alzheimer's disease using entropy methods.
Leif E R Simmatis, Emma E Russo, Yasemin Altug, Vijairam Murugathas, Josh Janevski

Neuroscience· October 2024

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Improving Dysarthric Speech Segmentation With Emulated and Synthetic Augmentation.
Saeid Alavi Naeini, Leif Simmatis, Deniz Jafari, Yana Yunusova, Babak Taati

IEEE J Transl Eng Health Med· April 2024

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Detecting bulbar amyotrophic lateral sclerosis (ALS) using automatic acoustic analysis.
Leif E R Simmatis, Jessica Robin, Michael J Spilka, Yana Yunusova

Biomed Eng Online· February 2024

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Validation of automated pipeline for the assessment of a motor speech disorder in amyotrophic lateral sclerosis (ALS).
Leif Er Simmatis, Jessica Robin, Timothy Pommée, Scotia McKinlay, Rupinder Sran

Digit Health· December 2023

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Technical and clinical considerations for electroencephalography-based biomarkers for major depressive disorder.
Leif Simmatis, Emma E Russo, Joseph Geraci, Irene E Harmsen, Nardin Samuel

Npj Ment Health Res· October 2023

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Detecting bulbar amyotrophic lateral sclerosis (ALS) using automatic acoustic analysis.
Leif Simmatis, Jessica Robin, Michael Spilka, Yana Yunusova

Res Sq· September 2023

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3D Video Tracking Technology in the Assessment of Orofacial Impairments in Neurological Disease: Clinical Validation.
Deniz Jafari, Leif Simmatis, Diego Guarin, Liziane Bouvier, Babak Taati

J Speech Lang Hear Res· August 2023

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Analytical Validation of a Webcam-Based Assessment of Speech Kinematics: Digital Biomarker Evaluation following the V3 Framework.
Leif Simmatis, Saeid Alavi Naeini, Deniz Jafari, Michael Kai Yue Xie, Chelsea Tanchip

Digit Biomark· April 2023

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Author Correction: Quantifying changes over 1 year in motor and cognitive skill after transient ischemic attack (TIA) using robotics.
Leif E R Simmatis, Stephen H Scott, Albert Y Jin

Sci Rep· March 2023

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Correction: Statistical measures of motor, sensory and cognitive performance across repeated robot-based testing.
Leif E R Simmatis, Spencer Early, Kimberly D Moore, Simone Appaqaq, Stephen H Scott

J Neuroeng Rehabil· January 2023

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Reliability of Automatic Computer Vision-Based Assessment of Orofacial Kinematics for Telehealth Applications.
Leif Simmatis, Carolina Barnett, Reeman Marzouqah, Babak Taati, Mark Boulos

Digit Biomark· July 2022

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Facial Landmark Tracking in Videos of Individuals with Neurological Impairments: Is There a Trade-off Between Smoothness and Accuracyƒ.
Leif E R Simmatis, Yana Yunusova

Annu Int Conf IEEE Eng Med Biol Soc· November 2021

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Quantifying changes over 1 year in motor and cognitive skill after transient ischemic attack (TIA) using robotics.
Leif E R Simmatis, Stephen H Scott, Albert Y Jin

Sci Rep· August 2021

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Principal Components Analysis Using Data Collected From Healthy Individuals on Two Robotic Assessment Platforms Yields Similar Behavioral Patterns.
Michael D Wood, Leif E R Simmatis, Jill A Jacobson, Sean P Dukelow, J Gordon Boyd

Front Hum Neurosci· May 2021

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The feasibility of assessing cognitive and motor function in multiple sclerosis patients using robotics.
Leif Er Simmatis, Albert Y Jin, Sean W Taylor, Etienne J Bisson, Stephen H Scott

Mult Scler J Exp Transl Clin· October 2020

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Statistical measures of motor, sensory and cognitive performance across repeated robot-based testing.
Leif E R Simmatis, Spencer Early, Kimberly D Moore, Simone Appaqaq, Stephen H Scott

J Neuroeng Rehabil· July 2020

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Corrigendum to "Assessing various sensorimotor and cognitive functions in people with epilepsy is feasible with robotics" [Epilepsy Behav 103(A) 2020].
Leif E R Simmatis, Albert Y Jin, Michelle Keiski, Lysa B Lomax, Stephen H Scott

Epilepsy Behav· May 2020

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Assessing various sensorimotor and cognitive functions in people with epilepsy is feasible with robotics.
Leif E R Simmatis, Albert Y Jin, Michelle Keiski, Lysa B Lomax, Stephen H Scott

Epilepsy Behav· February 2020

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The Impact of Transient Ischemic Attack (TIA) on Brain and Behavior.
Leif E R Simmatis, Stephen H Scott, Albert Y Jin

Front Behav Neurosci· March 2019

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The feasibility of using robotic technology to quantify sensory, motor, and cognitive impairments associated with ALS.
Leif Simmatis, Ghada Atallah, Stephen H Scott, Sean Taylor

Amyotroph Lateral Scler Frontotemporal Degener· February 2019

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Using principal component analysis to reduce complex datasets produced by robotic technology in healthy participants.
Michael D Wood, Leif E R Simmatis, J Gordon Boyd, Stephen H Scott, Jill A Jacobson

J Neuroeng Rehabil· July 2018

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