Limits to tDCS effects in language:failures to modulate word production in healthy participants with frontal or temporal tDCS

Transcranial direct current stimulation (tDCS) is a method of non-invasive brain stimulation widely used to modulate cognitive functions. Recent studies, however, suggests that effects are unreliable, small and often non-significant at least when stimulation is applied in a single session to healthy individuals. We examined the effects of frontal and temporal lobe anodal tDCS on naming and reading tasks and considered possible interactions with linguistic activation and selection mechanisms as well possible interactions with item difficulty and participant individual variability. Across four separate experiments (N, Exp 1A = 18; 1B = 20; 1C = 18; 2 = 17), we failed to find any difference between real and sham stimulation. Moreover, we found no evidence of significant effects limited to particular conditions (i.e., those requiring suppression of semantic interference), to a subset of participants or to longer RTs. Our findings sound a cautionary note on using tDCS as a means to modulate cognitive performance. Consistent effects of tDCS may be difficult to demonstrate in healthy participants in reading and naming tasks, and be limited to cases of pathological neurophysiology and/or to the use of learning paradigms.

Kutù’và yu tu’ún va’á. Estoy aprendiendo la palabra de bienestar. Iniciación etnodramática

Is it possible from some one out side of Ñuu Saví (Mixtec) culture to learn how to do an ethnodrama? A healer and rain maker from Mixteca land is teaching me how to ask for rain and cure diseases. “Kutù’và yu Tu’ún Va’á”, is the name of my thesis and means “I am learning the wellness word”. This work is an “ethnodramatic initiation” to their sacred language. I don’t attempt to read Don Marcelino’s mind but to create a mental scenario that would help us to contemplate the internal spectacle he and his community watch during the ethnodrama of rain and healing. Finally I will represent my learning process during my initiation to body-mental technics. The subject of the thesis travels around several concepts interrelated: feast, ritual, celebration, healing, rain, knowledge, magical thinking, learning, performance… It’s related to an analogic language, oral culture, holistic perception and ethnodramaturgy. I will apply some of the concepts of Weisz’s ethnodramatic performance theory to a place located in Mexico, state of Oaxaca, Juxtlahuaca district, belonging to the municipality of Coicoyán de las Flores, El Jicaral. A wiseman from Nuun Tiaxin, Ñuu Saví, is teaching me how to speak with Rain and Sicknesses. Ethnodrama is a word used by Weisz to make the difference between theatre, and an ethnic paratheatrical performance. The ethnic drama is a mythological text, that it is seen inside the mind of the community members. Weisz conceives the concept as part of a greater project called, Anthropology of Knowledge, that studies the imaginary solutions to explain the formation of the world, the universe and the inscribed rituals in all great antique cultures Weisz [1994b:29]. Curanderismo, quackery, belongs to a illegitimate literature, it is something no serious. An art that goes beyond the canons of a written text and does not match with the categories of our cultures. It threatens the monolithic solidity of our academic reality and then it’s excluded. Weisz proposes to study shamanic text from a marginal position in front of a central culture that only recognizes as valid certain texts. The ethnotexto is uncomfortable, it intimidates the unity of the group of the dominant culture. Curanderismo places itself then in a position that questions a conceptual colonization, that “behavior and ideology that nourish themselves from a totalizing strategy”. A colonization that transcends Europe, related to power and to the dominant position. This is how Literature field is created Weisz [2005: 102-103]...

La influencia del word of mouth electrónico sobre las ventas de un refresco

La comunicación boca-oreja/boca-boca o Word of Mouth, término adquirido del idioma anglosajón, es considerada una de las formas de comunicación con mayor influencia en el comportamiento de compra de los consumidores, jugando un importante rol en la modificación de las actitudes y patrones de consumo (Brown & Reingen, 1987). En la actualidad, los avances en la tecnología de la comunicación, han permitido que la información compartida entre consumidores supere las barreras geográficas propagándose de forma inmediata. Internet ofrece numerosas plataformas y puntos de reunión donde los consumidores pueden compartir sus visiones, preferencias o experiencia con los productos (Trusov, Bucklin, & Pauwels, 2009) El WOM que se genera en las redes sociales en Internet (eWOM) puede ser observado, medido y analizado. Debido a que estas conversaciones que se dan en plataformas de opinión quedan semi permanentemente archivadas, las marcas pueden explotar la información, extrayendo conocimiento acerca del consumidor que pueda facilitar la gestión de sus estrategias de marketing (Kozinets, Valck, Wojnicki, & Wilner, 2010). Esto ofrece grandes oportunidades para la investigación de la comunicación y el marketing permitiendo medir la repercusión de la comunicación interpersonal en el negocio de las compañías. La investigación que se plantea en esta Tesis Doctoral pretende conocer y analizar el fenómeno del WOM como factor influenciador en el comportamiento de compra de los consumidores. El objetivo principal es entender el comportamiento del WOM electrónico como variable influyente en las ventas de un producto y cuantificar su eficacia. Es decir, identificar en qué medida la información acerca de un producto compartida por los usuarios en entornos online, puede tener un efecto significativo en su resultado de ventas...

"Not one word of it made any sense" : Hyperbolic Synecdoche in the British National Corpus

A distinct metonymic pattern was discovered in the course of conducting a corpus-based study of figurative uses of WORD. The pattern involved examples such as Not one word of it made any sense and I agree with every word. It was labelled ‘hyperbolic synecdoche’, defined as a case in which a lexeme which typically refers to part of an entity (a) is used to stand for the whole entity and (b) is described with reference to the end point on a scale. Specifically, the speaker/writer selects the perspective of a lower-level unit (such as word for ‘utterance’), which is quantified as NOTHING or ALL, thus forming a subset of ‘extreme case formulations’. Hyperbolic synecdoche was found to exhibit a restricted range of lexicogrammatical patterns involving word, with the negated NOTHING patterns being considerably more common than the ALL patterns. The phenomenon was shown to be common in metonymic uses in general, constituting one-fifth of all cases of metonymy in word. The examples of hyperbolic synecdoche were found not to be covered by the oftquoted ‘abbreviation’ rationale for metonymy; instead, they represent a more roundabout way of expression. It is shown that other cases of hyperbolic synecdoche exist outside of word and the domain of communication (such as ‘time’ and ‘money’).

Para situar o ritual nas histórias do teatro

Neste documento reunem-se um conjunto de notas de trabalho relativas à disciplina de História do teatro, inquirindo das formas de a história do teatro se ocupar do ritual como forma performativa. Analisam-se casos e especificam-se as consequências resultantes das opções dominantes.

Author Profiling using SVMs and Word Embedding Averages — Notebook for PAN at CLEF 2016

In this paper, we describe one of the approaches of the participation of Universidade de Évora. Our approach is similar to usual methods where text is preprocessed, features are extracted, and then used in SVMs with cross validation. The main difference is that features used come from averages of word embeddings, specifically word2vec vectors. Using PAN 2016 dataset, we were able to achieve 44.8% and 68.2% for English age and gender classification respectively. We were also able to achieve 51.3% and 67.1% accuracy for Spanish age and gender classification. Finally, we report 71.9% accuracy for Dutch age classification.