Luz Maria Alonso-Valerdi

Luz Maria Alonso-Valerdi
Tecnológico de Monterrey | ITESM · Escuela de Ingeniería y Ciencias - School of Engineering and Sciences

PhD
Working collaboratively with posgraduate and undergraduate students: https://neuroinge.wordpress.com/

About

84
Publications
17,911
Reads
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221
Citations
Citations since 2017
66 Research Items
197 Citations
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Introduction
Luz Maria Alonso-Valerdi currently works at the Escuela de Ingeniería y Ciencias - School of Engineering and Sciences, Tecnológico de Monterrey. Luz does research in Electronic Engineering, Computer Engineering and Biomedical Engineering. Her current projects are related to Neural Engineering, Neural Interfaces, Cognitive Sciences and Neuro-acoustics .
Additional affiliations
October 2014 - October 2016
Tecnológico de Monterrey
Position
  • PostDoc Position
May 2014 - July 2014
Benemérita Universidad Autónoma de Puebla
Position
  • Lecturer
Description
  • -Anatomy and Physiology -Project Development
January 2010 - February 2011
University of Essex
Position
  • Research Assistant
Description
  • I collaborated with Dr Silke Paulmann as a research assistant in the Psychology department at the University of Essex. My main task was to analyse EEG signals by using EEGLab or coding my own Matlab programs.
Education
January 2009 - August 2013
University of Essex
Field of study
  • Brain-Computer Interfaces
September 2004 - February 2007
August 1999 - May 2004
Benemérita Universidad Autónoma de Puebla
Field of study
  • Electronics Engineering

Publications

Publications (84)
Article
Full-text available
Background and Objective Chronic neuropathic pain (NP) is a chronic pain condition that severely impacts a patient's life. Pain management has proved to be inefficient due to a lack of a simple clinical tool that may identify and monitor NP. A low-cost, noninvasive tool that provides relevant information on NP is the electroencephalogram (EEG). How...
Article
Full-text available
Affective stimuli have been extensively used in emotion research for a better understanding of emotion regulation. Sound ratings, specifically non-verbal sounds, are biased by demographic indicators such as sex and nationality. Therefore, it is crucial to characterize sounds prior to their use in emotion research. This study aims to validate the IA...
Cover Page
Full-text available
Call for volunteers to be a member of the Neuroengineering and Neuroacoustics Research Group
Article
Full-text available
Virtual reality has been widely used in various industries, such as entertainment, communication, and healthcare, to mention a few. In the health industry, in combination with the brain–computer interfaces (BCIs), virtual reality could produce rehabilitation measures that may contribute novel strategies such as remote rehabilitation or telerehabili...
Article
Full-text available
Artificial voices are nowadays embedded into our daily lives with latest neural voices approaching human voice consistency (naturalness). Nevertheless, behavioral, and neuronal correlates of the perception of less naturalistic emotional prosodies are still misunderstood. In this study, we explored the acoustic tendencies that define naturalness fro...
Article
Full-text available
the present database provides demographic (age and sex), clinical (hearing loss and acoustic properties of tinnitus), psychometric (based on tinnitus Handicapped Inventory and Hospital anxiety and Depression Scale) and electroencephalographic information of 89 tinnitus sufferers who were semi-randomly treated for eight weeks with one of five acoust...
Article
Background Tinnitus is an auditory condition with no effective treatments. Seven of the 25 most widely used treatment are sound based therapies, but no methods to select an appropriate one have been established. Method Therefore, this investigation aimed to establish a method to select an appropriate acoustic therapy by finding comparable psycho-n...
Book
Throughout history, humankind has been progressing steadily in the generation of knowledge and applications using such findings. In this context, different revolutions have emerged across the years, such as in agriculture, industry, technology, science, and, most recently, information. Information technologies refer to the analysis, structuring and...
Article
Full-text available
The management of chronic neuropathic pain remains a challenge, because pain is subjective, and measuring it objectively is usually out of question. However, neuropathic pain is also a signal provided by maladaptive neuronal activity. Thus, the integral management of chronic neuropathic pain should not only rely on the subjective perception of the...
Article
Full-text available
Fault diagnosis in high-speed machining centers (HSM) is critical in manufacturing systems , since early detection saves a substantial amount of time and money. It is known that 42% of failures in these centers occur in rotatory machineries, such as spindles, in which, the bearings are fundamental elements for effective operation. Nowadays, there a...
Article
Full-text available
Tinnitus is an auditory condition that causes humans to hear a sound anytime, anywhere. Chronic and refractory tinnitus is caused by an over synchronization of neurons. Sound has been applied as an alternative treatment to resynchronize neuronal activity. To date, various acoustic therapies have been proposed to treat tinnitus. However, the effect...
Article
The perception of sound can differ significantly, regardless of its physical properties. The frequency content of a sound can provoke different psychoacoustic effects on humans, and simultaneously, it modulates differently brain oscillations. Audio devices such as headphones are variables that have not been taken into consideration in many studies...
Conference Paper
The lack of an integral characterization of chronic neuropathic pain (NP) has led to pharmacotherapy mismanagement and has hindered advances in clinical trials. In this study, we attempted to identify chronic NP by fusing psychometric (based on the Brief Inventory of Pain – BIP), and both linear and non-linear electroencephalographic (EEG) features...
Conference Paper
Environmental noise is an important social issue that directly affects the efficiency of the students. The aim of this study is to investigate how environmental noise generated in the library affects the performance at learning commons. For this study, the noise of the library was recorded and sixteen students of Tecnologico de Monterrey, were recr...
Conference Paper
Full-text available
he Mexican Emotional Speech Database is presented along with the evaluation of its reliability based on machine learning analysis. The database contains 864 voice recordings with six different prosodies: anger, disgust, fear, happiness, neutral, and sadness. Furthermore, three voice categories are included: female adult, male adult, and child. The...
Article
Full-text available
In this paper, the Mexican Emotional Speech Database (MESD) that contains single-word emotional utterances for anger, disgust, fear, happiness, neutral and sadness with adult (male and female) and child voices is described. To validate the emotional prosody of the uttered words, a cubic Support Vector Machines classifier was trained on the basis of...
Article
Full-text available
Binaural beats (BB) consist of two slightly distinct auditory frequencies (one in each ear), which are differentiated with clinical electroencephalographic (EEG) bandwidths, namely, delta, theta, alpha, beta, or gamma. This auditory stimulation has been widely used to module brain rhythms and thus inducing the mental condition associated with the E...
Article
At present, the majority of the top tinnitus treatments is based on sound. Sound-based therapies may become highly effective when the right patient at the correct time and the appropriate context is selected. The investigation presented here attempts to compare sound therapies based on music, retraining, neuromodulation, and binaural sounds in line...
Conference Paper
The frequency content of a sound changes the perception of acoustic features, but can headphones also change auditory information interpretation? Audio devices such as headphones are factors that have not been taken into consideration at studying sound perception, specifically in acoustic therapies. In particular, alternative treatments based on ps...
Article
Full-text available
The data described in this article refers to the experimental paradigm where subjects listened to the same pink noise modified by the frequency responses of three headphone models while their brain responses were recorded by means of electroencephalography. Six types of data are described: 1) pink noise sounds with a length of 2.73 s used for the e...
Article
PurposeFatigue decreases performance in several professional activities. Fatigue can lead to commit technical mistakes, which consequences might be lethal, such as in health area, where a surgical error due to the absence of rest can provoke the patient death. Therefore, this study aims to detect vigil and fatigue (due to lack of sleep) states in m...
Article
Introduction: Tinnitus is an annoying buzz that manifests itself in many ways. In addition, it can provoke anxiety, stress, depression, and fatigue. The acoustic therapies have become the most commonly applied treatment for tinnitus, either self-administered or clinically prescribed. Binaural Sound Therapy (BST) and Music Therapy (MT) aim to rever...
Article
Environmental noise (EN) refers to unpleasant harmful sounds that deteriorates living conditions. Therefore, this study aims to investigate how EN affects students at learning commons, where EN increases between 70 and 90 dBA, and which levels disturb psycho-physiologically. For this purpose, 16 students of Tecnologico de Monterrey were recruited:...
Raw Data
Thirty six chronic neuropathic pain patients (8 men and 28 women) of Mexican nationality with a mean age of 44±13.98 were recruited for EEG signal recording in eyes open and eyes closed condition. Each condition was recorded for 5 min, with a total recording session time of 10 min. An ID number was given to each patient after singing up for the stu...
Data
Towards the adaptation of Brain-Computer Interfaces (BCIs) from the laboratories to real contexts, the challenge of providing an efficient interaction becomes more notorious. Current paradigms are adapted to a technical perspective which suffices only a fraction of requirements to control a computational application with neural activity. For exampl...
Article
At present, the majority of the top tinnitus treatments is based on sound. Sound-based therapies may become highly effective when the right patient at the correct time and the appropriate context is selected. The investigation presented here attempts to compare sound therapies based on music, retraining, neuromodulation, and binaural sounds in line...
Preprint
Full-text available
Fatigue decreases performance in several professional activities. Fatigue can lead to commit technical mistakes which consequences might be lethal, such as in health area, where a surgical error due to the absence of rest can provoke the patient death. Therefore, this study aims to detect vigil and fatigue (due to lack of sleep) states in medical s...
Conference Paper
Full-text available
The aim of this project was to compare the level of modulation of the Electroencephalographic (EEG) activity achieved by naïve users under two paradigms: traditional (or Graz) and User-Centered Design (UCD), which represents a foundation concept and methodology for the anthropocentric perspective in Brain Computer Interfaces. Both approaches made u...
Conference Paper
Full-text available
Towards the adaptation of Brain-Computer Interfaces (BCIs) from the laboratories to real contexts, the challenge of providing an efficient interaction becomes more notorious. Current paradigms are adapted to a technical perspective which suffices only a fraction of requirements to control a computational application with neural activity. For exampl...
Poster
Full-text available
The perception of sound can differ significantly, regardless of its physical properties. Surprisingly, the frequency content of a sound can provoke different psychoacoustic effects in humans and, at the same time, modulate the electrical waves of the brain. Audio devices such as headphones are variables that have not been taken into consideration i...
Article
Full-text available
Socio-emotional impairments are key symptoms of Autism Spectrum Disorders. This work proposes to analyze the neuronal activity related to the discrimination of emotional prosodies in autistic children (aged 9 to 11-year-old) as follows. Firstly, a database for single words uttered in Mexican Spanish by males, females, and children will be created....
Conference Paper
Full-text available
Un examen tradicional, es una evaluación sumativa que puede presentar diferentes sesgos tales como (1) conceptos memorizados, sin comprensión de estos, o bien, (2) pruebas de opción múltiple donde está presente la probabilidad estadística de sacar una respuesta correcta sin conocerla. El objetivo de la presente investigación es analizar la activida...
Conference Paper
Full-text available
La desviación visual como el estrabismo, es una condición en la cual los ojos no pueden ver al mismo lugar. El principal tratamiento es a través de una cirugía, la cual puede ser imprecisa o no definitiva. Las terapias visuales, son una alternativa más económica y menos invasiva que han mostrado ser bastante efectivas para lograr la rehabilitación...
Article
Subjective tinnitus is a complex symptom that has no effective treatment up to now. Several acoustic therapies such as retraining therapy, auditory discrimination therapy, enriched acoustic environment and binaural therapy have been proposed to induce habituation and/or diminution of the tinnitus perception. The effect of the auditory stimulus in u...
Book
Full-text available
Este pequeño libro está dedicado a todas las personas jóvenes y, muy especialmente, a las niñas y jovencitas que tienen la inquietud por la Ciencia. Con él queremos romper los estereotipos de que la ciencia es solo para genios, que las personas que se dedican a la ciencia son aburridas y, sobre todo, que ésta es solo para hombres. Nada puede ser má...
Poster
Full-text available
Chronic subjective tinnitus affects quality of life by limiting every day activities, from working to sleeping or even thinking. This neurological syndrome could cause anxiety, depression or insomnia. Tinnitus has been studied for a long period of time and many different acoustic therapies that seek to reduce its perception have been developed. Nev...
Poster
Full-text available
Acufeno, es la percepción de sonido, sin que exista una fuente externa que lo genere y sin actividad vibratoria coclear. El acufeno crónico y refractario se describe con un cambio neuro-plástico en el sistema nervioso central, específicamente se refiere a una reorganización cortical tonotópica. Actualmente no existe una manera objetiva de caracteri...
Poster
Full-text available
The management of chronic neuropathic pain (NP) remains a challenge for physicians and researchers, because of its subjective character. In contrast to other types of pain, chronic NP is more difficult to treat and has a greater repercussion in daily life. Given the complex neuroplastic mechanism behind chronic NP, it seems crucial to evaluate the...
Conference Paper
Full-text available
Human concentration depends on many volatile environmental factors and its quantification has been a recurrent research topic. One way to quantify concentration is to record and analyze electrical activity in the cerebral cortex. Music is one factor that significantly influences concentration, both positively and negatively, so we studied the influ...
Article
Full-text available
RESUMEN Las Interfaces Cerebro-Computadora (ICCs) son sistemas que miden la actividad del Sistema Nervioso Central y la convierten en salidas que reemplazan, restauran, aumentan, suplementan o mejoran las salidas naturales de dicho sistema y, por lo tanto, cambian las interacciones en curso entre el ser humano y su ambiente interno o externo. Sin e...
Conference Paper
The virtual reality (VR) technology has been able to emulate physical places with realistic details, useful for multiple areas such as rehabilitation, education, entertainment, etc. This is possible because virtual environments can emulate the sense of “presence” that the user undergoes in the real world. The present study aimed to compare the typi...
Conference Paper
Therapainting is a system based on head movements and eye blinks that allows the artistic expression for therapeutic purposes. Head movements and eyes blinks are respectively detected by accelerometers and electroencephalographic electrodes mounted on the headband MUSE developed by InteraXon from Toronto, Canada. On the basis of different exercises...
Article
Full-text available
Acoustic signals have valuable information and can complement mechanical signals (e.g., effort, roughness, and optics) since both of them have a good correlation. Furthermore, acoustic signals have non-invasive nature. In this work, roughness characterization via acoustic emission, along with the subsequent roughness detection based on convolutiona...
Conference Paper
In order to propose alternative treatments for strabismus, conventional visual therapies implemented in VR, which could be rendered in portable devices for pediatric strabismus treatment is proposed in this paper. In comparison with other virtual environments for visual correction proposes, the proposed system is based on conventional visual therap...
Conference Paper
Full-text available
Es bien sabido que un estilo de vida físicamente activo conlleva muchos beneficios a la salud, entre ellos un mejor desempeño cardiovascular y una mejor oxigenación de la sangre. El objetivo del estudio es analizar la actividad neuronal del lóbulo frontal durante una prueba lógico-matemática, en estudiantes con un estilo de vida sedentario, contra...
Conference Paper
Full-text available
El objetivo de este trabajo es estudiar los efectos corticales de los sonidos binaurales para coadyuvar a la disminución del estrés de estudiantes universitarios. Para el estudio, se reclutaron a 18 voluntarios: 9 hombres y 9 mujeres (edad 22.83 ± 1.13 años). Los voluntarios fueron divididos en dos grupos, control y experimental. El grupo de contro...
Research
Full-text available
Te recent prevalence of new technologies and devices for the fruition of multimedia contents (e.g., head-mounteddisplays, augmented reality devices, smartphones and tablets) has been changing the modality of accessing and exploring the digital information, by introducing novel humancomputer interactions (HCIs) modalities. Te even growing market dem...
Article
Full-text available
Brain-computer interfaces (BCIs) are technology in development that attempt to establish interaction between individuals and their surroundings by modulating their neural activity. One of the most common strategies to modulate neural activity is motor imagery (MI). However, research on MI-based BCIs has been mostly carried out on the system-related...
Chapter
Full-text available
Motor imagery (MI)-based brain-machine interface (BMI) is a technology under development that actively modifies users’ perception and cognition through mental tasks, so as to decode their intentions from their neural oscillations, and thereby bringing some kind of activation. So far, MI as control task in BMIs has been seen as a skill that must be...
Data
Video abstract of the project titled as "Academic Education Assessment via Neurometrics based on Student Profiles and Competences"
Chapter
Brain-computer interfaces (BCIs) are promising systems that attempt to replace the function of the brain output pathways by using the brain signals to control a device of interest. Investigating the control tasks (specifically motor imagery (MI) tasks) used to operate a BCI system under different demanding conditions may explain the difficulty to e...
Article
Full-text available
Tridimensional representations stimulate cognitive processes that are the core and foundation of human-computer interaction (HCI). Those cognitive processes take place while a user navigates and explores a virtual environment (VE) and are mainly related to spatial memory storage, attention, and perception. VEs have many distinctive features (e.g.,...
Conference Paper
Full-text available
En este trabajo se busca establecer una metodología objetiva basada en el monitoreo de actividad electroencefalográfica (EEG) para evaluar el efecto a nivel cortical de las terapias acústicas que se aplican como método paliativo del tinnitus. Como el objetivo de las terapias acústicas es la habituación del paciente al sonido del tinnitus, se tiene...
Article
Full-text available
Background To date, a large number of acoustic therapies have been applied to treat tinnitus. The effect that produces those auditory stimuli is, however, not well understood yet. Furthermore, the conventional clinical protocol is based on a trial-error procedure, and there is not a formal and adequate treatment follow-up. At present, the only way...
Presentation
Full-text available
Dynamic Bivariate Multiscale Entropy (DBMSE) is applied to a collection of EEG to investigate neural resources in stimulus-response mapping mechanism in BCI. The tendency in channels P3 and PO3 were: A change in the task that a person performs on a stimulus often changes the appropriate response (the stimulus–response mapping). Performance analys...
Data
Background: To date, a large number of acoustic therapies have been applied to treat tinnitus. The effect that produces those auditory stimuli is, however, not well understood yet. Furthermore, the conventional clinical protocol is based on a trial-error procedure, and there is not a formal and adequate treatment follow-up. At present, the only way...
Conference Paper
Full-text available
En el presente trabajo se presenta el abordaje multidisciplinario de una patología (Epilepsia Parcial occipital) por medio de técnicas de Resonancia Magnética Nuclear, Electroencefalografía y Reacción en Cadena de Polimerasa. A través de la experiencia de aprendizaje, inspirada en las metodologías de Aprendizaje Centrado en el Paciente, se pretende...
Article
Full-text available
A brain-computer interface (BCI) aims to establish communication between the human brain and a computing system so as to enable the interaction between an individual and his environment without using the brain output pathways. Individuals control a BCI system by modulating their brain signals through mental tasks (e.g., motor imagery or mental calc...
Article
Full-text available
Brain-computer interface (BCI) is technology that is developing fast, but it remains inaccurate, unreliable and slow due to the difficulty to obtain precise information from the brain. Consequently, the involvement of other biosignals to decode the user control tasks has risen in importance. A traditional way to operate a BCI system is via motor im...
Conference Paper
Full-text available
Brain-Computer Interfaces (BCI) is a relative new way of communication between humans and automobiles, which allows alternatives ways of monitoring drivers or controlling systems only with brain signals. The use of BCI in intelligent transport systems (ITS) seem to be promising, since BCI systems can be used in active, reactive or passive way. In p...
Conference Paper
In a brain-computer interface (BCI), human factors are frequently overlooked and not considered for the implementation of the system. One of the most relevant parts of a BCI is the feedback method due to its influence in the psychophysiological state of the user. Unfortunately, current BCI feedback methods are boring, only corrective, and not meani...
Conference Paper
Regardless of the considerable advances towards an optimal brain-computer interface (BCI), this remains inaccurate, unreliable and slow [1]. As a result, the use of other electrophysiological signals have been proposed. For the improvement of motor imagery (MI) based BCIs, the use of the heart rate variability (HRV) has been proposed being that MI...
Article
Full-text available
A motor imagery (MI) based brain computer interface (BCI) is a system that enables humans to interact with their environment by translating their brain signals into control commands for a target device. In particular, synchronous BCI systems make use of cues to trigger the motor activity of interest. So far, it has been shown that Electroencephalog...
Article
At present, there is a wide variety of free open-source brain-computer interface (BCI) software. Even though the available software is very complete, it often runs under a Matlab environment. Matlab is a high performance language for scientific computing, but its limitations concerning the license cost, the restricted access to the algorithm code,...