Emotion regulation and PTSI

Treball Final de Grau en Psicologia. Codi: PS1048. Curs: 2018/2019.In this review, our aim was to study the relationship between emotion regulation and PTSD. For this, the scientific literature was analyzed from the Scopus, PubMed and Web of Science databases. Broadly speaking, a total of 100 related studies were obtained, however, after an exhaustive selective process, 35 studies remained. After the review, a large number of studies were obtained confirming the close relationship between the difficulties of emotional regulation and the severity of PTSD symptoms, which is more complex than it appeared. At the same time, it was seen how emotional regulation mediates the relationship between PTSD and problems such as risky sexual behavior, alcohol consumption, trauma-cocaine association, eating disorders, depressive symptoms and problems of social adjustment after trauma. Also the relationship with alexithymia, negative affect, positive affect, more cognitive aspects (such as metacognition or the own perception of emotional intelligence), the type of trauma, dissociative symptoms and traumatic history. The influence of emotional regulation on the symptoms of PTSD is evidenced even by alterations in certain psychophysiological parameters. Another remarkable result of this review was the relationship between emotion regulation and the most severe form of PTSD, that is complex PTSD. In some way, this review is validating the importance of the difficulties of emotional regulation in PTSD and with it, the need to include sections to work these difficulties in treatment programs and even their prevention in the school setting.En esta revisión, nuestro objetivo fue estudiar la relación que hay entre la regulación emocional y el TEPT. Para ello, la literatura científica fue analizada desde las bases de datos Scopus, PubMed y Web of Science. A grandes rasgos, se obtuvieron un total de 100 estudios relacionados, sin embargo, tras un exhaustivo proceso selectivo, se quedaron en 35 estudios. Tras la revisión, se obtuvieron gran cantidad de estudios que confirmaban la estrecha relación entre las dificultades de regulación emocional y la severidad de los síntomas TEPT, siendo esta más compleja de lo que parecía. Al mismo tiempo, se vio cómo la regulación emocional media la relación entre el TEPT y problemáticas tales como conductas sexuales de riesgo, consumo de alcohol, asociación traumacocaína, trastornos alimentarios, síntomas depresivos y problemas de ajuste social tras el trauma. También la relación con la alexitimia, el afecto negativo, el afecto positivo, aspectos más cognitivos (como la metacognición o la propia percepción de la inteligencia emocional), el tipo de trauma, síntomas disociativos y la historia traumática. La influencia de la regulación emocional en los síntomas del TEPT se evidencia incluso mediante alteraciones en ciertos parámetros psicofisiológicos. Otro resultado destacable de esta revisión fue la relación entre las dificultades de regulación emocional y la forma más severa del TEPT, que es el TEPT complejo. De alguna manera, esta revisión está validando la importancia de las dificultades de regulación emocional en el TEPT y con ello, la necesidad de que se incluyan apartados para trabajar estas dificultades en los programas de tratamiento e incluso su prevención en el entorno escolar

On the speed of Random Walks among Random Conductances

We consider random walk among random conductances where the conductance environment is shift invariant and ergodic. We study which moment conditions of the conductances guarantee speed zero of the random walk. We show that if there exists \alpha>1 such that E[log^\alpha({\omega}_e)]<\infty, then the random walk has speed zero. On the other hand, for each \alpha>1 we provide examples of random walks with non-zero speed and random walks for which the limiting speed does not exist that have E[log^\alpha({\omega}_e)]<\infty.Comment: 22 pages, 4 picture

Designing Auditory Feedback from Wearable Weightlifting Devices

While wearable devices for fitness have gained broad popularity, most are focused on tracking general activity types rather than correcting exercise forms, which is extremely important for weightlifters. We interviewed 7 frequent gym-goers about their opinions and expectations for feedback from wearable devices for weightlifting. We describe their desired feedback, and how their expectations and concerns could be balanced in future wearable fitness technologies

A central limit theorem for the effective conductance: Linear boundary data and small ellipticity contrasts

Given a resistor network on $\mathbb Z^d$ with nearest-neighbor conductances, the effective conductance in a finite set with a given boundary condition is the the minimum of the Dirichlet energy over functions with the prescribed boundary values. For shift-ergodic conductances, linear (Dirichlet) boundary conditions and square boxes, the effective conductance scaled by the volume of the box converges to a deterministic limit as the box-size tends to infinity. Here we prove that, for i.i.d. conductances with a small ellipticity contrast, also a (non-degenerate) central limit theorem holds. The proof is based on the corrector method and the Martingale Central Limit Theorem; a key integrability condition is furnished by the Meyers estimate. More general domains, boundary conditions and ellipticity contrasts will be addressed in a subsequent paper.Comment: 30 pages, 1 figure. Corrected a proof of a bound on triple gradient of the Green function. Version to appear in Communications in Mathematical Physic

Self-Supervised Vision-Based Detection of the Active Speaker as Support for Socially-Aware Language Acquisition

This paper presents a self-supervised method for visual detection of the active speaker in a multi-person spoken interaction scenario. Active speaker detection is a fundamental prerequisite for any artificial cognitive system attempting to acquire language in social settings. The proposed method is intended to complement the acoustic detection of the active speaker, thus improving the system robustness in noisy conditions. The method can detect an arbitrary number of possibly overlapping active speakers based exclusively on visual information about their face. Furthermore, the method does not rely on external annotations, thus complying with cognitive development. Instead, the method uses information from the auditory modality to support learning in the visual domain. This paper reports an extensive evaluation of the proposed method using a large multi-person face-to-face interaction dataset. The results show good performance in a speaker dependent setting. However, in a speaker independent setting the proposed method yields a significantly lower performance. We believe that the proposed method represents an essential component of any artificial cognitive system or robotic platform engaging in social interactions.Comment: 10 pages, IEEE Transactions on Cognitive and Developmental System

Large deviations for the local times of a random walk among random conductances

We derive an annealed large deviation principle for the normalised local times of a continuous-time random walk among random conductances in a finite domain in $\Z^d$ in the spirit of Donsker-Varadhan \cite{DV75}. We work in the interesting case that the conductances may assume arbitrarily small values. Thus, the underlying picture of the principle is a joint strategy of small values of the conductances and large holding times of the walk. The speed and the rate function of our principle are explicit in terms of the lower tails of the conductance distribution. As an application, we identify the logarithmic asymptotics of the lower tails of the principal eigenvalue of the randomly perturbed negative Laplace operator in the domain.Comment: 12 page