Search results for "EEC"
showing 10 items of 1614 documents
Canonical correlation in multivariate time series analysis
1997
We analyze a class o f state space identification algorithms for time series, based on canonical correlation analysis in the ligth of recent results on stochastic systems theory calle d « subspace methods » .These can be describe as covariance estimation followed b y stochastic realization .The methods offer the major advantage o f converting the nonlinear parameter estimation phase in traditional V A R M A models identification in to the solution o f Riccati equation but introduce at the same time some no n trivial mathematical problem s related to positivity. The states o f the forward -backward innovations representation have an interpretation : Instrumental Variables estimators .
Molecular phylogeny of treecreepers (Certhia) detects hidden diversity†
2006
We sequenced a part of the mitochondrial cytochrome-b gene from the seven treecreeper species, including 18 subspecies, to reconstruct the phylogeny of the genus Certhia. Species status of all seven species could be affirmed. Certhia discolor, C. himalayana, C. nipalensis, and C. tianquanensis, the species with relatively small distribution ranges in southeast Asia and simple territorial song, are found at the base of all phylogenetic trees, although without good support. A comparatively recent sister species of C. tianquanensis is C. nipalensis, replacing C. discolor as closest relative. Certhia familiaris, C. brachydactyla and C. americana form a derived set of species (again only weak su…
Within territory abundance of red wood ants Formica rufa is associated with the body condition of nestlings in the Eurasian treecreeper Certhia famil…
2007
Studies on individual reproductive success in relation to interspecific competition between distantly related taxa are scarce. We studied whether the abundance of red wood ants Formica rufa -group is related to the breeding habitat selection, fecundity and offspring quality in the Eurasian treecreeper Certhia familiaris, an old-growth forest passerine. The nest-box occupancy data were gathered over a five-year study period, whereas the breeding performance analyses were based on a two-year data set. The abundance of wood ants, measured within 50 m around the nest-boxes, was not related to nest-box occupancy rate, fecundity or the physiological stress of nestlings. In contrast, the abundance…
Rapid neural encoding of the contrast between native and nonnative speech in the alpha band
2021
AbstractMore than half of the world’s population is multilingual, yet it is not known how the human brain encodes the perception of native vs. nonnative speech. To find out, we asked German native speakers to detect the onset of native and nonnative (English and Turkish) vowels in a roving standard stimulation. Using EEG, we show that nonnativeness is robustly registered by an increase in phase coherence in the alpha band (8-12 Hz), beginning as early as ∼100 ms after stimulus onset and lasting more than 200 ms. The alpha band effect is speech-specific, successfully predicts the response speed advantage of nonnative speech, and grants ∼90% decoding accuracy in distinguishing native vs. nonn…
Acoustic, myoelectric, and aerodynamic parameters of euphonic and dysphonic voices: a systematic review of clinical studies
2021
Background: At present, there is no clinical consensus on the concept of normal and dysphonic voices. For many years, the establishment of a consensus on the terminology related to normal and pathological voices has been studied, in order to facilitate the communication between professionals in the field of the voice. Aim: systematically review the literature to compare and learn more precisely the measurable and objective characteristics of the acoustic, aerodynamic and surface electromyographic parameters of the normal and dysphonic voices. Methods: The PRISMA 2020 methodology was used as a review protocol together with the PICO procedure to answer the research question through six databa…
Emotional Connotations of Musical Instrument Timbre in Comparison With Emotional Speech Prosody: Evidence From Acoustics and Event-Related Potentials
2018
Music and speech both communicate emotional meanings in addition to their domain-specific contents. But it is not clear whether and how the two kinds of emotional meanings are linked. The present study is focused on exploring the emotional connotations of musical timbre of isolated instrument sounds through the perspective of emotional speech prosody. The stimuli were isolated instrument sounds and emotional speech prosody categorized by listeners into anger, happiness and sadness, respectively. We first analyzed the timbral features of the stimuli, which showed that relations between the three emotions were relatively consistent in those features for speech and music. The results further e…
Habilidades lingüísticas pragmáticas en el Síndrome de Williams
2010
Tradicionalmente, la caracterización lingüística de los hablantes con Síndrome de Williams ha insistido en una notable habilidad social y verbal (sobre todo léxica), que contrastaba con la deficiencia mental normalmente asociada al síndrome; sin embargo, la incorporación de enfoques pragmáticos en el ámbito de la lingüística clínica mostró que los hablantes con Síndrome de Williams tienen limitaciones importantes en ese ámbito. En este trabajo, a fin de profundizar en la descripción de este déficit, se muestran los resultados de aplicar a las transcripciones de 6 hablantes con SW dos tipos de protocolo: el perfil PerLA (de naturaleza descriptivacualitativa) y el PREP-INIA (que permite una e…
Auditory perceptual learning : evidence from electrophysiological recordings in rodents and humans
2018
Yllättävät muutokset äänimaailmassa viestittävät yleensä selviytymisen kannalta tärkeistä vihjeistä, joten niiden nopea ja automaattinen havaitseminen on tärkeää. Tietoinen harjoittelu mahdollistaa havainto-oppimisen ja oppimisen seurauksena hermostoon muodostuu uusia muistijälkiä. Varhaisessa kehityksessä herkkyyskauden aikana muistijälkien muodostuminen, ihmisellä erityisesti puheäänille, on automaattista, eikä siihen vaadita tietoista harjoittelua. Toisaalta perinteisesti on ajateltu, että herkkyyskauden jälkeen vain aktiivinen harjoittelu johtaa uusien muistijälkien muodostumiseen. Muutoksen havaitsemisen hermostollista perustaa voidaan tutkia mittaamalla aivojen sähköisiä jännitevastei…
Funciones ejecutivas, comprensión de historias y coherencia narrativa en niños con trastorno por déficit de atención con hiperactividad
2010
Resumen Investigaciones previas senalan que los ninos con trastorno por deficit de atencion con hiperactividad (TDAH) tienen dificultades especificas en la narracion de historias, especialmente si la tarea narrativa requiere planificacion y control del tiempo. Sus narraciones estan menos organizadas que las de ninos con un desarrollo tipico, lo cual puede deberse a fallos en el sistema de funcionamiento ejecutivo, un problema central del TDAH. El objetivo de este trabajo fue examinar la influencia de las funciones ejecutivas en la comprension de historias y en la coherencia narrativa en una muestra de 26 ninos con un diagnostico clinico de TDAH. Despues de escuchar una historia compleja con…
O znaczeniu mowy egocentrycznej, dialogu i dyskusji w edukacji matematycznej uczniów w młodszym wieku szkolnym
2018
Verbal speech is conducive to the cognitive development of individuals and influences — in a positive way — the effectiveness of the process of learning. Language makes it possible to feel free while thinking and enables people to generate various ideas, to make hypotheses, or formulate different — even the most fanciful — theories which relate to phenomena examined by them. The considerations which the author makes on the role of speech in the process of learning became the incentive to carry out research among students of pedagogy, whose aim was to establish what views they present concerning the importance of egocentric speech, dialogue and discussion in the mathematical education of chi…