Carolina Diaz-Piedra

Carolina Diaz-Piedra
University of Granada | UGR · Mind, Brain, and Behavior Research Center

PhD

About

57
Publications
13,920
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937
Citations

Publications

Publications (57)
Article
Pain is the cardinal feature in fibromyalgia syndrome (FMS) and increases risk of anxiety and depression. Patients with FMS frequently complain of sleep disturbances as well. Sleep may intermediate the association between pain and emotional symptoms, an idea which has been scarce studied. The objective of this study is to uncover the role of subjec...
Article
Although sleep complaints are often reported in patients with fibromyalgia syndrome (FMS), there is no conclusive evidence that these complaints represent symptomatic disorders of sleep physiology. Thus, the question of the role of sleep disturbances as an etiological or maintenance factor in FMS remains open. This study identifies the subjective a...
Article
Sleep complaints are one of the most frequent and relevant symptoms that characterize fibromyalgia syndrome (FMS). However, objective sleep disturbances have not been consistently described across FMS studies. It is therefore commonly accepted that FMS patients experience sleep misperception, even though no studies have investigated the contributio...
Article
Full-text available
Among the factors associated with driving safety, sleep-related variables constitute a leading cause of road accidents. Circadian fluctuations of driver's somnolence has been previously linked to road safety. However, the role of chronotype in this relationship has been poorly investigated. Thus, the aim of the present work was to address whether d...
Article
Full-text available
Abstract Sleep-related disorders are common in patients with chronic obstructive pulmonary disease (COPD) and, possibily, other lung disorders. Exercise has been shown to improve sleep disturbances. In patients with COPD, pulmonary rehabilitation (PR) produces important health benefits with improvement in symptoms, exercise tolerance, and quality o...
Article
Full-text available
Due to the intrinsic difficulties associated with simulating extreme events, it remains unclear how unpleasant emotional arousal might affect shooting performance among well-trained high-risk operators. To address this issue, an infantry rifle squad performed two simulated shooting exercises of different complexity (low vs. high) while exposed to u...
Article
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Traffic lights are critical in regulating traffic flow and modulate the level of service and road user safety. As suggested by studies conducted with pedestrians, traffic light spacing and signal congruency could also impact a driver's decision-making process. However, requirements related to designing signalized intersections do not always conside...
Article
The color-word reverse Stroop (RS) effect still represents an interesting puzzle for cognitive researchers as an interference between incongruent ink colors and the meaning of the words is not always found. Here, we examined whether an unfamiliar and complex visuomotor task would produce a RS effect. Forty inexperienced shooters carried out a simul...
Article
Full-text available
Dynamical systems and fractal theory methodologies have been proved useful for the modeling and analysis of experimental datasets and, in particular, for electroencephalographic signals. The computation of the fractal dimension of approximation curves in the plane enables the assignment of numerical values to bioelectric recordings in order to disc...
Article
We studied the validity of electroencephalographic (EEG) and gaze indices to discriminate task load variations in professional Army drivers while performing real training exercises with a Light Multirole Vehicle in non-combat scenarios. Twenty-two non-commissioned officers from the Spanish Army carried out two sets of standardized driving exercises...
Article
Full-text available
Objective: To reduce the gap between old and new eye tracking studies in aviation by raising the interest of the scientific community in some of the pioneering works. We present two emblematic cases: the misattributed origin of the use of eye tracking techniques in aviation to Paul M. Fitts and his collaborators, and the forgotten (and often reinv...
Article
Road hazard perception is considered the most prominent higher-order cognitive skill related to traffic-accident involvement. Regional cultures and social rules that govern acceptable behavior may influence drivers’ interpretation of a traffic situation and, consequently, the correct identification of potentially hazardous situations. Here, we aime...
Chapter
Driving fatigue detection is core to road safety. Infrared thermography has gained increasing attention due to the chance to non-invasively monitor real-time fatigue-related variations. Here, we present an exploratory study regarding the use of the driver’s hand-skin temperature as a fatigue index. Eleven participants drove along a monotonous circu...
Article
Full-text available
We aimed to evaluate the effects of mental workload variations, as a function of the road environment, on the brain activity of army drivers performing combat and non-combat scenarios in a light multirole vehicle dynamic simulator. Forty-one non-commissioned officers completed three standardized driving exercises with different terrain complexities...
Article
Full-text available
The functional validity of the signal obtained with low-cost electroencephalography (EEG) devices is still under debate. Here, we have conducted an in-depth comparison of the EEG-recordings obtained with a medical-grade golden-cup electrodes ambulatory device, the SOMNOwatch + EEG-6, versus those obtained with a consumer-grade, single dry electrode...
Article
Infrared thermography, thanks to technological developments and lowering prices, is now getting considerable attention as a potential arousal monitor in the safety industry. Nasal skin temperature might be a valid index to track physiological variations due to reduced arousal levels, and its use could prevent a drowsiness-related deterioration of p...
Article
We studied the effects of task load variations as a function of flight complexity on combat pilots' gaze behavior (i.e., entropy) while solving in-flight emergencies. The second company of the Spanish Army Attack Helicopter Battalion (n=15) performed three sets of standardized flight exercises with different levels of complexity (low [recognition f...
Article
Objective: To assess the sensitivity of an electroencephalographic (EEG)-based index, the prefrontal beta power, to quantify the mental workload in surgeons in real scenarios. Such EEG-based index might offer unique and unbiased measures of overload, a crucial factor when designing learning and training surgical programs. Design: The experiment...
Article
Full-text available
Background: Surgeons’ overload is one of the main causes of medical errors that might compromise patient safety. Due to the drawbacks of current options to monitor surgeons’ load, new, sensitive, and objective indices of task (over)load need to be considered and tested. In non-health-care scenarios, intraocular pressure (IOP) has been proved to be...
Article
Background: Premature infants are exposed to high levels of noise in the neonatal intensive care unit (NICU). Purpose: This study evaluated the effect of a relaxing music therapy intervention composed by artificial intelligence on respiratory rate, systolic and diastolic blood pressure, and heart rate. Methods: A double-blind, randomized, control...
Article
Driver fatigue can impair performance as much as alcohol does. It is the most important road safety concern, causing thousands of accidents and fatalities every year. Thanks to technological developments, wearable, single-channel EEG devices are now getting considerable attention as fatigue monitors, as they could help drivers to assess their own l...
Article
Full-text available
Background The lack of physical activity and increasing time spent in sedentary behaviours during childhood place importance on developing low cost, easy-toimplement school-based interventions to increase physical activity among children. The PREVIENE Project will evaluate the effectiveness of five innovative, simple, and feasible interventions (ac...
Article
Objective: To assess the sensitivity of gaze-based metrics in detecting cognitive demands imposed by surgical procedures. We analyzed urologists’ gaze entropy and velocity while performing two standardized high-fidelity simulated stone procedures with different levels of complexity. Methods: Using a wearable eye-tracker device (mounted onto an eyeg...
Article
Background: Despite the growing interest concerning the laparoendoscopic single-site surgery (LESS) procedure, LESS presents multiple difficulties and challenges that are likely to increase the surgeon's cognitive cost, in terms of both cognitive load and performance. Nevertheless, there is currently no objective index capable of assessing the surg...
Poster
Full-text available
Increased rates of diabetes throughout Mexico contribute to rising rates of morbidity, mortality and health care costs. This poster describes a Spanish-language evidence-based sleep education program tested with health providers enrolled in a certified diabetes educator program in central Mexico.
Poster
Full-text available
There is growing concern regarding sleep disorders and associated comorbidities that threaten public health and health care costs. This work describes an evidence-based sleep education program tested with community-living older adults to promote sleep. health.
Article
Introduction There is growing concern regarding sleep disorders and associated comorbidities that threaten public health and health care costs. This work describes an evidence-based sleep education program tested with community-living older adults to promote sleep health. Methods The community-based program is an adaptation of a training manual de...
Article
Introduction Increased rates of diabetes throughout Mexico contribute to rising rates of morbidity, mortality and health care costs. This work describes a Spanish-language evidence-based sleep education program tested with health providers enrolled in a certified diabetes educator program in Mexico. Methods The training is an advanced adaptation o...
Article
Full-text available
Head circumference in infants has been reported to predict brain size, total grey matter volume (GMV) and neurocognitive development. However, it is unknown whether it has predictive value on regional and subcortical brain volumes. We aimed to explore the relationship between several head circumference measurements since birth and distributions of...
Article
In daily contexts, coping with stressful events involves a great level of personal resources to recover baseline conditions efficiently, a process called stress recovery. The aim of this study was to assess the effects of an intervention based on preferred relaxing music on the recovery after stress exposure. We also analyzed the effect of gender o...
Article
Full-text available
Fibromyalgia (FMS) is a complex clinical syndrome that includes many symptoms beyond chronic pain. The studies that have addressed brain morphometry in FMS have had very heterogeneous results. Thus, the question of which specific FMS symptoms and clinical features-pain, but also psychological distress, sleep-related problems, health status, and med...
Article
Full-text available
Background: Task (over-)load imposed on surgeons is a main contributing factor to surgical errors. Recent research has shown that gaze metrics represent a valid and objective index to asses operator task load in non-surgical scenarios. Thus, gaze metrics have the potential to improve workplace safety by providing accurate measurements of task load...
Conference Paper
Background: Task (over)load imposed on operators who work at safety-critical environments is a main contributing factor to the occurrence of catastrophic errors. Laboratory research has shown that gaze metrics represent a valid tool to asses operator task load. Thus, gaze metrics have the potential to improve operator and system safety by providing...
Article
Fatigue is a major contributing factor to operational errors. Therefore, the validation of objective and sensitive indices to detect fatigue is critical to prevent accidents and catastrophes. Whereas tests based on saccadic velocity (SV) have become popular, their sensitivity in the military is not yet clear, since most research has been conducted...
Data
3-D models of subcortical structures showing shape changes related to pain intensity, psychological distress, anxiety, sleep quality, sleepiness, and health status. Red surface represents expansions, whereas blue one contractions
Article
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Background: During fetal and perinatal periods, many nutrients, such as long-chain polyunsaturated fatty acids [contained in fish oil (FO)] and folate, are important in achieving normal brain development. Several studies have shown the benefits of early nutrition on children's neurocognitive development. However, the evidence with regard to the at...
Article
Full-text available
Human and animal research has found that red perception is associated with specific behavioral reactions, generally characterized by intense responses. Here, we explored whether red cars are perceived as more dangerous than other colored cars. One hundred Spanish drivers examined several road scenarios which involved hazardous cars with different c...
Conference Paper
Fatigue at the wheel has been strongly related to car accidents. Traditionally, this phenomenon has been studied in laboratory conditions by means of performance testing. Here, we aimed to improve road safety assessing driver fatigue at the wheel in real scenarios. For this purpose, we have built BioTracker®: a flexible non invasive platform. A sma...
Conference Paper
The great usefulness of remote recording of biomedical signals in most aspects of daily life has generated an increasing interest in this field. Traditionally, monitoring devices from clinical enviroments are bulky, intrusive, and expensive. Thus, the development of wearable, mobile , and low-cost applications is desirable. Nevertheless, recent imp...
Article
Most research connecting task performance and neural activity to date has been conducted in laboratory conditions. Thus, field studies remain scarce, especially in extreme conditions such as during real flights. Here, we investigated the effects of flight procedures of varied complexity on the in-flight EEG activity of military helicopter pilots. F...
Article
Full-text available
Sleep disturbances play an important role in the exacerbation of pain and other troubling symptoms reported by patients with fibromyalgia (FM). The objective of this trial was to analyze the efficacy of a cognitive-behavioral therapy for insomnia (CBT-I) versus a sleep hygiene (SH) education program at improving sleep and other clinical manifestati...
Article
Full-text available
Objectives: To investigate differences in sleep quality between Hispanics of Mexican descent (HMD) and Non-Hispanic Whites (NHW) and evaluate the effect of acculturation to the US lifestyle in sleep health. We hypothesize that the detrimental effect of acculturation on health outcomes will impact sleep quality among HMD. Design: We performed a popu...
Article
Objective: A large consensus exists within the scientific community with regard to the existence of a high incidence of traffic accidents in people with Sleep Apnea Hypopnea Syndrome (SAHS). However, some aspects of this relationship are still in need of clarification. It has not been possible to show the likely cause of this large rate of accident...
Chapter
People's sleep undergoes very significant evolutionary changes during infancy and childhood and, in a lesser degree, during adolescence. The amount of sleep stages, their distribution and their characteristics normally vary in the first stages of human development. During infancy and childhood, sleep quality depends on the complex interaction betwe...
Article
Full-text available
This study aimed to evaluate the efficacy of cognitive-behavioral therapy for insomnia (CBT-I) on polysomnographic parameters in patients with fibromyalgia (FM). Twenty-six women with FM participated in the study and were randomly assigned to a CBT-I (n = 13) group or sleep hygiene (SH) condition (n = 13). The evaluation consisted in two interview...
Article
Full-text available
This pilot, randomized controlled trial analyzed the effects of a cognitive behavioral therapy (CBT, n = 20) for insomnia vs a sleep hygiene (SH, n = 20) program on the three attentional networks (alertness, orienting, and executive function) and other additional outcome measures (sleep, pain, depression, anxiety, and daily functioning) of fibromya...
Article
Full-text available
Introduction Drug consumption has become a social problem requiring political, social, and educational intervention in its prevention and treatment. In Latin America, the drug problem is highly related to the violence and the social exclusion of the metropolis. Forty percent of the 15–year–olds already smoke. On average, each person in the general...

Projects

Projects (3)
Archived project
- To examine the effectiveness of five 8-weekschool-based interventions (active commuting to/from school, active PE lessons, active school recess, sleep health promotion, and an integrated intervention with all four components) and compare them with the control group. - To improve physical activity, fitness, anthropometry, sleep health, academic achievement, and health-related quality of life in primary school children
Project
This line of research aims to find reliable ocular biomarkers of cognitive effort in laboratory and applied settings.
Project
To determine learning outcomes regarding sleep disorders, chronic disease and sleep health promotion among Mexican health providers enrolled in certified diabetes educator courses, nurses enrolled in graduate programs, and community groups.