Faculty Member

Call: +34 976 762704

Email: parmanac@unizar.es

Address: C/ María de Luna 1, Edificio Ada Byron, Lab. 3.07-50018 Zaragoza (Spain)

ABOUT ME

Pablo Armañac Julián received the B.Sc. degree in Electronics and Automation Engineering and the M.Sc. degree in Biomedical Engineering from the University of Zaragoza, where he obtained his Ph.D. in Biomedical Engineering in 2024 with Cum Laude distinction and European Doctorate mention. Since January 2026, he has been an Assistant Professor (Profesor Ayudante Doctor) in the area of Computer Science and Artificial Intelligence, at the University of Zaragoza. His research focuses on biomedical signal processing for non-invasive cardiovascular and respiratory monitoring, especially heart rate variability, photoplethysmography, wearable devices with photoplethysmography, inertial measurement units, and signal quality assessment. His work addresses applications in sleep apnea, stress and depression monitoring, vascular reactivity and digital health in clinical scenarios.

PUBLICATIONS

2026

Journal Articles

Jimenez-Ocaña, A A; Pantoja, A; Armañac, P; Bailón, R; Laguna, P; Giraldo, L F

Stress Detection Using Heart Rate Variability and Respiratory Signals Derived From a Single-Lead ECG Journal Article

In: IEEE Trans. Biomed. Eng., 2026.

Links | BibTeX

2025

Journal Articles

Armañac-Julián, P; Kontaxis, S; Lázaro, J; Rapalis, A; Brazaitis, M; Marozas, V; Laguna, P; Bailón, R; Gil, E

Vascular Reactivity Characterized by PPG-derived Pulse Wave Velocity Journal Article

In: Biomedical Signal Processing and Control, vol. 105, iss. 107641, 2025.

Links | BibTeX

Cajal, D; de la Cámara, C; Miguel, M Posadas-de; Torrijos, N; Nadal, Ó; Blanco, T; Siddi, S; Armañac, P; Gil, E; Lázaro, J; Bailón, R

Evaluation of Stress Response Using Smartphone PPG for Anxiety and Depression Monitoring Journal Article

In: IEEE Access, 2025.

Links | BibTeX

Conferences

Pina, J; Bernal-Berdun, E; Martin, D; Malpica, S; Real, C; Armañac-Julián, P; Lázaro, J; Martín-Yebra, A; Masia, B; Serrano, A

The Effect of Cognitive Load on Visual Search Tasks in Multisensory Immersive Environments Conference

IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW), 2025.

Links | BibTeX

Armañac-Julián, P; Hernando, D; Barquero, A; Gil, E; Lázaro, J; Martínez-Gómez, D; Bailón, R

Cobertura Funcional de la Frecuencia Cardiaca del Wearable MATRIX en Vida Diaria No Estructurada Conference

Proceedings CASEIB 2025, Zaragoza, 2025.

Links | BibTeX

Pérez, S; Armañac, P; Martín-Yebra, A; López, J; Suñol, F; de Haro, C; Sarlabous, L; Fernández, R; Batlle, M; Blanch, L; Bailón, R

Índice de concentración espectral respiratoria como predictor del éxito del destete en pacientes ventilados mecánicamente en UCI Conference

Jornadas de Jóvenes Investigadores del I3A, vol. 13, 2025, ISSN: 2341-4790.

Links | BibTeX

Wadhwani, N; Armañac, P; Bailón, R; Gil, E

Impact of Signal Quality on the Accuracy of Pulse Rate Variability Derived from Photoplethysmography Conference

Proceedings CASEIB 2025, Zaragoza, 2025.

Links | BibTeX

2024

Journal Articles

Hietakoste, S; Armañac-Julián, P; Karhu, T; Bailón, R; Sillanmäki, S; Töyräs, J; Leppanen, T; Myllymaa, S; Kainulainen, S

Acute cardiorespiratory coupling impairment in worsening sleep apnea-related intermittent hypoxemia Journal Article

In: IEEE Transactions on Biomedical Engineering, 2024.

Links | BibTeX

Armañac-Julián, P; Martín-Montero, A; Lázaro, J; Hornero, R; Laguna, P; Kheirandish-Gozal, L; Gozal, D; Gil, E; Bailón, R; Gutiérrez-Tobal, G

Persistent Sleep Disordered Breathing Independently Contributes to Metabolic Syndrome in Prepubertal Children Journal Article

In: Pediatric Pulmonology, pp. 1-10, 2024.

Links | BibTeX

Hietakoste, S; Karhu, T; Lombardi, C; Armañac-Julián, P; Bailón, R; Duce, B; Sillanmäki, S; Töyräs, J; Leppänen, T; Myllymaa, S; Kainulainen, S

Nocturnal short-term heart rate variability reflects impaired daytime vigilance better than overnight heart rate variability in suspected obstructive sleep apnea patients Journal Article

In: SLEEP, vol. XX, pp. 1–12, 2024.

Links | BibTeX

Conferences

Martín-Montero, A; Armañac-Julián, P; García-Vicente, C; Bailón, R; Gil, E; Gozal, D; Penzel, T; Hornero, R; Gutiérrez-Tobal, G C

ECG-Derived Respiratory Power Index to Evaluate and Track Pediatric Sleep Apnea Conference

13th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO), 2024.

Links | BibTeX

Armañac-Julián, P; Lazaro, J; Gil, E; Bailón, R

Sex Differences in Beat-to-Beat Heart Rate Response to Systolic Pressure Increases Conference

13th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO), 2024.

Links | BibTeX

Hietakoste, S; Armañac-Julián, P; Karhu, T; Bailón, R; Sillanmäki, S; Töyräs, J; Leppänen, T; Myllymaa, S; Kainulainen, S

Worsening hypoxic load impairs cardiorespiratory coupling Conference

13th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO), 2024.

Links | BibTeX

Barquero, A; Armañac-Julián, P; Bailón, R; Lazaro, J; Gil, E; Hernando, D

Validating a PPG Device for Estimating Heart Rate in Various Activity Conditions Conference

13th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO), 2024.

Links | BibTeX

Barquero, A; García, E; Kontaxis, S; Siddi, S; Cummins, N; Vairavan, S; Matcham, F; Hotopf, M; Lamers, F; Penninx, B; Dobson, R; Narayan, V; Bailón, R; Armañac-Julián, P; Consortium, RADAR-CNS

Relación entre la Actividad Física y el Ritmo Cardíaco Registrados por un Wearable de Pulsera en Pacientes con Depresión Conference

Proceedings CASEIB 2024, 2024.

Links | BibTeX

PhD Theses

Armañac-Julián, P

Cardiovascular Signal Processing Oriented to Long-Term Monitoring PhD Thesis

2024.

Links | BibTeX

2023

Journal Articles

Martín-Montero, A; Armañac-Julián, P; Gil, E; Kheirandish-Gozal, L; Álvarez, D; Lázaro, J; Bailón, R; Gozal, D; Laguna, P; Hornero, R; Gutiérrez-Tobal, G C

Pediatric Sleep Apnea: Characterization of Apneic Events and Sleep Stages Using Heart Rate Variability Journal Article

In: Computers in Biology and Medicine, 2023.

Links | BibTeX

Conferences

Armañac-Julián, P; Martín-Montero, A; Hietakoste, S; Lázaro, J; Kainulainen, S; Gozal, D; Hornero, R; Laguna, P; Gutiérrez-Tobal, G C; Gil, E; Bailón, R

Characterization of Cardiopulmonary Coupling in Pediatric Patients with Obstructive Sleep Apnea Conference

Proceedings of the XLIX International Conference on Computing in Cardiology, Atlanta, USA, 2023.

Links | BibTeX

Armañac-Julián, P; Martín-Montero, A; Hietakoste, S; Lázaro, J; Kainulainen, S; Gozal, D; Hornero, R; Laguna, P; Gutiérrez-Tobal, G; Gil, E; Bailón, R

Caracterización del Acoplo Cardiopulmonar en Pacientes Pediátricos con Apnea Obstructiva del Sueño Conference

Congreso de la Sociedad Española de Ingeniería Biomédica CASEIB, Cartagena, España, 2023.

Links | BibTeX

2022

Journal Articles

Armañac, P; Kontaxis, S; Rapalis, A; Marozas, V; Laguna, P; Bailón, R; Gil, E; Lázaro, J

Reliability of Pulse Photoplethysmography Sensors: Coverage Using Different Setups and Body Locations Journal Article

In: Frontiers in Electronics, 2022.

Links | BibTeX

Conferences

Armañac-Julián, P; Martín-Montero, A; Lázaro, J; Kontaxis, S; Álvarez, D; Gozal, D; Hornero, R; Laguna, P; Gutiérrez-Tobal, G; Bailón, R; Gil, E

Changes in HRV metrics during sleep apnea episodes in children Conference

European Study Group on Cardiovascular Oscillations (ESGCO), Štrbské Pleso (Slovakia), 2022.

Links | BibTeX

2021

Journal Articles

Armañac, P; Hernando, D; Lázaro, J; Haro, C; Magrans, R; Morales, J; Moeyersons, J; Sarlabous, L; López-Aguilar, J; Subira, C; Fernandez, R; Orini, M; Laguna, P; Varon, C; Gil, E; Bailón, R; Blanch, L

Cardiopulmonary Coupling Indices to Assess Weaning Readiness from Mechanical Ventilation Journal Article

In: Scientific Reports, vol. 11:16014, 2021.

Links | BibTeX

2020

Journal Articles

Morales, J; Moeyersons, J; Armañac, P; Orini, M; Faes, L; Overeem, S; Gilst, M Van; Dijk, J Van; Huffel, S Van; Bailón, R; Varon, C

Model-Based Evaluation of Methods for Respiratory Sinus Arrhythmia Estimation Journal Article

In: IEEE Trans Biomed Eng, vol. 68, no. 6, pp. 1882-1893, 2020.

Links | BibTeX

Conferences

Armañac, P; Hernando, D; Lázaro, J; Haro, C; Magrans, R; Sarlabous, L; López-Aguilar, J; Laguna, P; Gil, E; Blanch, L; Bailón, R

Baroreflex Sensitivity Evolution before Weaning From Mechanical Ventilation Conference

Proceedings of the XLVII International Conference on Computing in Cardiology, Rimini, Italy, 2020.

Links | BibTeX

2019

Conferences

Armañac, P; Kontaxis, S; Lázaro, J; Laguna, P; Bailón, R; Gil, E

Cardiovascular Changes Induced by Acute Emotional Stress Estimated from the Pulse Transit Time Difference Conference

Proceedings of the XLVI International Conference on Computing in Cardiology, Singapore, 2019.

Links | BibTeX

2018

Conferences

Armañac, P; Kontaxis, S; Lázaro, J; Laguna, P; Bailón, R; Gil, E

Cambios en la Diferencia del Tiempo de Tránsito del Pulso Sanguíneo en Estados de Estrés Emocional Agudo Conference

XXXVI Congreso Anual de la Sociedad Española de Ingenieríıa Biomédica, Ciudad Real, España, 2018.

Links | BibTeX