Tomás Ortiz Alonso's research while affiliated with Universidad de León and other places

Publications (53)

Article
The present study analyzes the psychometric properties of the Spanish version of the Satisfaction with Life Scale. The sample of 310 active elderly women with primary school education and living in their own homes. The scale's reliability was examined with Cronbach's alpha and the exploratory factor analysis. The reliability show a value of 0.75. P...
Article
Objective The present study analyzes the psychometric properties of the Spanish version of the Satisfaction with Life Scale.
Article
Objectivesto study the efficacy of combined treatment (anticholinesterase drugs and cognitive stimulation) in improving cognitive function in patients with moderate dementia after a 2-year follow-up.
Article
Quantitative magnetoencephalography (qMEG) was used to investigate differences in the 2 to 60 Hz spectral power, between Alzheimer disease (AD) patients and control subjects. Twenty-two AD patients and 21 age-matched control subjects participated in this study. MEG signal analysis comprised the division of the entire 2 to 60 Hz spectrum in 2 Hz-wid...
Article
Humans can flexibly alter a plan of action to adjust their behavior adaptively in changing environments. Functional neuroimaging has shown distinct patterns of activation across a frontoparietal network responsible for switching and updating such plans of action or 'task sets.' However, little is known about the temporal order of activations within...
Article
Dyslexia was first described over a century ago and since then many theories have been put forward to explain it, but we still do not have one single unified theory that explains the problem. Furthermore, over the years a great deal of research work has also been carried out that relates dyslexia with disorders in different brain structures, and ye...
Article
The development and activation of cognitive proceses are still unknown. How a child learns to recognize his mother, why another one has some difficulties to learn how to speak, which factors have an influence on motor clumsiness..., developmental neuropsychology treats these questions. Its aim is to study the relationship between the development of...
Article
Event related potentials are an objective parameter reflecting cognitive functions. Among the event related potentials, the P300 component is viewed as a measure of stimulus evaluation time and it can provide a rough estimate of the time required for perceptual processing. Impairment in cognitive processing, psychomotor retardation and abnormally a...
Article
Alzheimer's disease is a degenerative disorder characterised by cerebral atrophy with cortical and subcortical changes. Our objective is to investigate the patterns of atrophic changes in the corpus callosum in patients with Alzheimer's disease and healthy elderly subjects and to clarify the relations of callosal impairment and the presence of asso...
Article
Event related potentials have been examined in depression and Alzheimer disease like clinical utility. To evaluate the influence of visual and auditory stimuli on the P300 latency we studied 12 patients with major depression, 12 patients with Alzheimer disease and 12 normal subjects. The experimental tasks applied was, first a series of 300 auditor...
Article
Brain-imaging research provides evidence to suggest that the underlying disfunction in Obsessive-Compulsive Disorder (OCD) is likely to be in the prefrontal cortex-basal ganglia thalamic circuit rather than in any one single brain region. Early computerized tomography and magnetic resonance imaging studies have shown morphological changes in the ba...
Article
Brain-imaging research provides evidence to suggest that the underlying disfunction in Obsessive-Compulsive Disorder (OCD) is likely to be in the prefrontal cortex-basal ganglia thalamic circuit rather then in any one single brain region. Early computerized tomography and magnetic resonance imaging studies have shown morphological changes in the ba...
Article
Full-text available
Activación bilateral de la corteza motora después de un ictus capsular: un caso clínico. Uno de los signos comúnmente observados tras un infarto capsular es la presencia de movimientos asociados anormales. Varios estudios han puesto en relación estos movimientos asociados con una activación anómala bilateral de la corteza motora. Este patrón de act...
Article
Regitramos el componente P300 generado mediante estímulos auditivos en 8 pacientes con lesiones de la unión temporo-parietal izquierda (4) y derecha (4). A estos sujetos añadimos otros 6 sujetos control igualados con los pacientes en edad y sexo. Los resultados en la latencia del componente P300 muestran diferencias significativas entre el grupo co...
Article
Consciousness disturbances are frequent in patients admitted to traumatic intensive care units. These disturbances are associated to amnesia and attention dysfunctions, motor behaviour disorders and perception or even emotional alterations. Neuropsychologic disturbances after injury are reviewed, making a short introduction about general issues, em...
Article
Full-text available
Este estudio investiga el efecto de diversos tipos de intervención (cognitiva versus cognitiva + motora versus no intervención) en la memoria y el estado de ánimo emocional en mujeres mayores con quejas de memoria y con una vida pasiva. Los sujetos (N=102, 80% mujeres, edad M/SD = 76/5 años) se distribuyeron de forma aleatoria en los tres grupos de...

Citations

... Aunque otras investigaciones han encontrado más consistente la posibilidad de déficits temporales, sobre todo en la zona del hipocampo, implicados en las disfunciones autísticas (Dawson, Meltzoff, Osterling y Rinaldi, 1998;Hembry, Sánchez y Winslow, 2001). Por otra parte, no se descarta que los déficits en el autismo estén causados por diversas asimetrías cerebrales, tal y como han confirmado diferentes estudios (Harden, Minshem, Millikarjuhn y Keshavan, 2001;Hazlett et al., 2005;Muñoz et al., 2004). No obstante, han ido emergien-do diversas críticas en contra de estas teorías, que plantean, nuevos retos para su investigación (Griffith, Pennington, Wehner y Rogers, 1999). ...
... Presentation of the experimental task condition and each subject. We analyzed latencies and amplitudes in N100 component at electrode Fz between 80-140 ms from the beginning of the stimulus (Ortiz, Poch-Broto, Requena, Santos, Martínez, & Barcia, 2010). ...
... Es una epilepsia de difícil control, es decir que no responde adecuadamente al manejo farmacológico; por esta razón entre el 60 y 80% de pacientes candidatos a cirugía de epilepsia por farmacorresistencia presentan una ELT (Oun, Haldre & Magi, 2003). Otra característica de este tipo de epilepsia, es su comorbilidad con trastornos cognitivos secundarios a la frecuencia e intensidad de las crisis epilépticas, los cuales pueden ser focales al inicio, pero generalizados durante el curso de la enfermedad, llevando al paciente en ocasiones a presentar cuadros demenciales (Feria-Romero et al, 2013;Maestú, 2000). ...
... Algunas características descritas son: ahorrar palabras o fragmentos enteros de información, alterar el orden lógico de la oración, cometer varias veces el mismo error (Mulas, Etchepareborda, Díaz y Ruiz 2006). A lo anterior se suma la renuencia a corregir su estilo lingüístico, lo que tiene que ver con la rigidez cognitiva, el bajo nivel de perseverancia y la poca motivación para aprender (Etchepareborda, Mulas, Capilla, Fernández, Campo, Maestú, Fernández, y Ortiz, 2004, Vaquerizo, Estévez y Pozo, 2005. ...
... Para Capilla- González et al. (2004), el CPF no es el único sustrato neuroatómico de las FE, sino que existen una amplia participación de otras áreas cerebrales. Considerándose que se trataría de un área de asociación héteromodal, interconectada con estructuras corticales y subcorticales, y por ende, con múltiples regiones encefálicas (Jodar, 2004). ...
... On the other hand, the use and combination of the new functional neuroimaging techniques gives the opportunity to register the reorganization of the brain with a high temporal and spatial resolution, providing objective measures to assess the effectiveness of the rehabilitation programs. A review about neuropsychological rehabilitation results correlates with functional neuroimaging in patients with brain damage in [21]. ...
... La función compensadora de las vías motoras ipsilaterales queda aún más sustentada por los fenómenos observados con lesiones bilaterales secuenciales: algunos pacientes recuperados de una hemiplejía secundaria a una lesión situada en uno de los dos hemisferios cerebrales se vuelven tetrapléjicos cuando sufren una segunda lesión en el lado opuesto, lo que parece indicar que la actividad del hemisferio cerebral sano -menoscabada con la segunda lesión-había compensado funcionalmente las consecuencias del primer daño [32,33]. El papel compensador de las fibras que parten del hemisferio cerebral indemne podría explicar, además, la aparición de 'movimientos en espejo': en muchos pacientes hemipléjicos se aprecian movimientos asociados en el lado sano cuando realizan esfuerzos por movilizar el lado parético, y esto puede reflejar una participación de las mismas vías en la motilidad de una y otra mano [34][35][36][37]. Además de estas observaciones clínicas, son numerosos los trabajos experimentales realizados en primates que apoyan la participación de las fibras ipsilaterales en la recuperación neurológica después de una lesión de la corteza motora o del FCE [20,[38][39][40][41]. ...
... The main characteristics that define SLD/LDD include the difficulty in acquiring oral language, but without cognitive and sensorial deficits, or neurological alterations, and those that affect the functioning or configuration of organs participating in speech (Adams & Lloyd, 2005;Bishop & Norbury, 2002 and Botting;Conti-Ramsden, 2003). It, therefore, seems clear that language development does not follow the usual pattern that takes place in typical development (TD), and persistent difficulties appear in various language areas (Andreu et al., 2014;Muñoz-Yunta et al., 2005). Children with this alteration face problems to both acquire and develop language (Rodríguez et al., 2017). ...
... The ASR modulations open the possibility to use these behavioral paradigms for the study of various neuropsychiatric disorders [3]. Adolescents with behavioral disorders and emotional insensitivity, related to antisocial behavior, show deficits in fear conditioning and a deficit in the startle response [47]. In addition, stress and drug addiction resulted in abnormal startle reflex [48]. ...
... Using MEG, Muñoz-Yunta et al. (2006) were able to distinguish individuals with SLI and Autism Spectrum Disorders (ASD) by analyzing the epileptiform activity. The study included 11 Spanish-speaking children with SLI (3-9 years old) and 9 participants with ASD (3-14 years old). ...