Luis Guillermo Hernández-Rojas

Dr. Luis Guillermo Hernández-Rojas

Computing, Tecnologico de Monterrey, Guadalajara, Jalisco, Mexico
orcid

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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29 May 2018 in Frontiers in Neuroinformatics
Verified
Journal Article
Open access
PDF file
Luis Guillermo Hernández-RojasLuis Guillermo Hernández-Rojas
Luis Guillermo Hernández-Rojas
OMOscar Martinez Mozos
Oscar Martinez Mozos
Jose FerrandezJose Ferrandez
Jose Ferrandez
Javier M. AntelisJavier M. Antelis
Javier M. Antelis
The anticipatory recognition of braking is essential to prevent traffic accidents. For instance, driving assistance systems can be useful to properly respond to emergency braking situations. Moreover, the response time to emergency braking situations can be affected and even increased by different driver's cognitive states caused by stress, fatigue, and extra workload. This work investigates the detection of emergency braking from driver's electroencephalographic (EEG) signals that precede the brake pedal actuation. Bioelectrical signals were recorded while participants were driving in a car simulator while avoiding potential collisions by performing emergency braking. In addition, participants were subjected to stress, workload, and fatigue. EEG signals were classified using support vector machines (SVM) and convolutional neural networks (CNN) in order to discriminate between braking intention and normal driving. Results showed significant recognition of emergency braking intention which was on average 71.1% for SVM and 71.8% CNN. In addition, the classification accuracy for the best participant was 80.1 and 88.1% for SVM and CNN, respectively. These results show the feasibility of incorporating recognizable driver's bioelectrical responses into advanced driver-assistance systems to carry out early detection of emergency braking situations which could be useful to reduce car accidents.

29 June 2020 in IEEE Access
Verified
Journal Article
Open access
Luis Guillermo Hernández-RojasLuis Guillermo Hernández-Rojas
Luis Guillermo Hernández-Rojas
Omar Mendoza MontoyaOmar Mendoza Montoya
Omar Mendoza Montoya
Javier M. AntelisJavier M. Antelis
Javier M. Antelis
Currently, one of the challenges in EEG-based brain-computer interfaces (BCI) for neurorehabilitation is the recognition of the intention to perform different movements from the same limb. This would allow finer control of neurorehabilitation and motor recovery devices by end-users. To address this issue, we assess the feasibility of recognizing two rehabilitative right upper-limb movements from pre-movement EEG signals. These rehabilitative movements were performed self-selected and self-initiated by the users using a motor rehabilitation robotic device. This work proposes anticipatory detection scenarios that discriminate EEG signals corresponding to non-movement state and movement intentions of two same-limb movements. The studied movements were discriminated above the empirical chance levels for all proposed detection scenarios. Percentages of correctly anticipated trials ranged from 64.3% to 77.0%, and the detection times ranged from 620 to 300 ms prior to movement initiation. The results of these studies indicate that it is possible to detect the intention to perform two different movements of the same upper limb and non-movement state. Based on these results, the decoding of the movement intention could potentially be used to develop more natural and intuitive robot-assisted neurorehabilitation therapies.

3 October 2025 in Sensors
Verified
Journal Article
Open access
PDF file
Jorge Saul Fandiño pelayoJorge Saul Fandiño pelayo
Jorge Saul Fandiño pelayo
LCLuis Sebastian Mendoza Castellanos
Luis Sebastian Mendoza Castellanos
Rocio Cazes OrtegaRocio Cazes Ortega
Rocio Cazes Ortega
Luis Guillermo Hernández-RojasLuis Guillermo Hernández-Rojas
Luis Guillermo Hernández-Rojas
This study addresses the growing need for intelligent monitoring in aquaponic systems by developing a predictive system based on artificial intelligence and environmental sensing. The goal is to improve fish welfare through the early detection of adverse water conditions. The system integrates low-cost digital sensors to continuously measure key physicochemical variables—pH, dissolved oxygen, and temperature—using these as inputs for real-time classification of fish health status. Four supervised machine learning models were evaluated: linear discriminant analysis (LDA), support vector machines (SVMs), neural networks (NNs), and random forest (RF). A dataset of 1823 instances was collected over eight months from a red tilapia aquaponic setup. The random forest model yielded the highest classification accuracy (99%), followed by NN (98%) and SVM (97%). LDA achieved 82% accuracy. Performance was validated using 5-fold cross-validation and label permutation tests to confirm model robustness. These results demonstrate that sensor-based predictive models can reliably detect early signs of fish stress or mortality, supporting the implementation of intelligent environmental monitoring and automation strategies in sustainable aquaponic production.

1 March 2019
Verified
Conference Paper
Closed access
Luis Guillermo Hernández-RojasLuis Guillermo Hernández-Rojas
Luis Guillermo Hernández-Rojas
Javier M. AntelisJavier M. Antelis
Javier M. Antelis
Currently, one of the challenges in EEG-based brain-computer interfaces (BCI) for neurorehabilitation is the recognition of the intention to perform different movements from same limb. This would allow finer control of neurorehabilitation and motor recovery devices by end-users [1]. To address this issue, we assess the feasibility of recognizing two self-paced movement intentions of the right upper limb plus a rest state from EEG signals recorded during robot-assisted rehabilitation therapy. In addition, the work proposes the use of Multi-CSP features and deep learning classifiers to recognize movement intentions of the same limb. The results showed performance peaked greater at (80%) using a novel classification models implemented in a multiclass classification scenario. On the basis of these results, the decoding of the movement intention could potentially be used to develop more natural and intuitive robot assisted neurorehabilitation therapies.


4 February 2018
Verified
Book Chapter
Closed access
PDF file
Alvaro David Orjuela-CañónAlvaro David Orjuela-Cañón
Alvaro David Orjuela-Cañón
OROsvaldo Renteria-Meza
Osvaldo Renteria-Meza
Luis Guillermo Hernández-RojasLuis Guillermo Hernández-Rojas
Luis Guillermo Hernández-Rojas
ARAndres Ruiz-Olaya
Andres Ruiz-Olaya
ACAlexander Cerquera
Alexander Cerquera
Javier M. AntelisJavier M. Antelis
Javier M. Antelis