Temporal Stimuli
Mostrando 1-12 de 242 artigos, teses e dissertações.
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1. Evaluation of Auditory Stream Segregation in Musicians and Nonmusicians
Abstract Introduction One of the major cues that help in auditory stream segregation is spectral profiling. Musicians are trained to perceive a fine structural variation in the acoustic stimuli and have enhanced temporal perception and speech perception in noise. Objective To analyze the differences in spectral profile thresholds in musicians and nonmusic
Int. Arch. Otorhinolaryngol.. Publicado em: 2021-01
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2. Subjective time under altered states of consciousness in ayahuasca users in shamanistic rituals involving music
Ayahuasca is described as a hallucinogenic substance whose property is to alter the subjective experience of time and impair the perception of the passage of time during stimuli of more than two to three seconds. The dose-dependent effects of two concentrations of ayahuasca in the ritualistic context were investigated employing temporal reproduction tasks in
Braz J Med Biol Res. Publicado em: 2020-08
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3. Validation of the Inventaire du Milieu Familial Questionnaire (French version of the Infant/Toddler HOME) into the Brazilian Portuguese language,
Resumo Objetivo: Validar a versão em português do Questionário de Avaliação do Ambiente Familiar (Inventaire du Milieu Familial). Métodos: O processo de validação foi feito em duas etapas. Primeiramente, realizou-se a tradução e retrotradução e, na segunda fase, o questionário foi aplicado em 72 famílias de crianças entre zero e 24 meses par
J. Pediatr. (Rio J.). Publicado em: 01/07/2019
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4. Vowel inventory size matters: Assessing cue-weighting in L2 vowel perception
Abstract: To examine whether L1 vowel inventory size could be a contributing factor to the use of temporal cues in L2 vowel perception, this study assessed the perception of English /i-ɪ/ by 66 learners of four different L1s: Danish, Portuguese, Catalan and Russian. The L2 learners performed a forced-choice identification task containing natural and duratio
Ilha Desterro. Publicado em: 2017-12
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5. Temporal Resolution and Active Auditory Discrimination Skill in Vocal Musicians
Abstract Introduction Enhanced auditory perception in musicians is likely to result from auditory perceptual learning during several years of training and practice. Many studies have focused on biological processing of auditory stimuli among musicians. However, there is a lack of literature on temporal resolution and active auditory discrimination skills i
Int. Arch. Otorhinolaryngol.. Publicado em: 2016-12
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6. System for open-chest, multidirectional electrical defibrillation
Abstract Introduction: Cardiomyocytes are more sensitive to stimulatory electrical fields when the latter are applied longitudinally to the cell major axis. In the whole heart, cells have different spatial orientations, which may limit the effectiveness of conventional electrical defibrillation (i.e., shock delivery in a single direction). This article descr
Res. Biomed. Eng.. Publicado em: 12/04/2016
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7. Temperament: an event-related potential study using the oddball paradigm
The present study examined the structure of interrelations between brain event-related potentials and behavioral measures and temperament dimensions during an attention task. Three temperament questionnaires were used: Eysenck Personality Inventory, Strelau Temperament Inventory, and Rusalov Structure of Temperament Questionnaire. Event-related potentials we
Psychol. Neurosci.. Publicado em: 2013-12
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8. Cortical activity in tinnitus patients and its modification by phonostimulation
OBJECTIVE: The goal of this study was to observe spontaneous cortical activity and cortical activity modulated by tinnitus-matched sound in tinnitus patients and healthy subjects with no otoneurologic symptoms. METHOD: Data were prospectively collected from 50 tinnitus patients and 25 healthy subjects. Cortical activity was recorded in all subjects with e
Clinics. Publicado em: 2013-04
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9. Chromatic spatial contrast sensitivity estimated by visual evoked cortical potential and psychophysics
The purpose of the present study was to measure contrast sensitivity to equiluminant gratings using steady-state visual evoked cortical potential (ssVECP) and psychophysics. Six healthy volunteers were evaluated with ssVECPs and psychophysics. The visual stimuli were red-green or blue-yellow horizontal sinusoidal gratings, 5° × 5°, 34.3 cd/m2 mean luminan
Braz J Med Biol Res. Publicado em: 01/02/2013
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10. Human photopic ON- and OFF-ERG responses elicited by square wave and sawtooth stimuli
In this study, the on- and off-responses elicited by luminance square wave and sawtooth stimuli at different temporal frequencies and contrasts are described quantitatively. Adding on- and off-responses reveals response asymmetries. Full-field stimuli were produced using a Ganzfeld bowl with arrays of light-emitting diodes (LEDs) as light sources. ERG respon
Psychol. Neurosci.. Publicado em: 2013
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11. Modulação circunstancial do desconto temporal: impacto de estímulos sobre a tomada de decisão nas esferas de negociação entre presente e futuro / Situational modulation of temporal discounting: impact of stimuli on decision-making in trade-offs between present and future
Seres humanos e outros organismos geralmente descontam o futuro, preferindo receber recompensas imediatas a postergadas. Essa tendência comum é compreensível, em grande parte, porque preterir o consumo de benefícios aumenta amplamente o risco de perdê-los. Ademais, a impaciência intertemporal pode ser adaptativa. A reprodução antecipada, em comparaç
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/10/2012
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12. Análise da concentração de nitrato no líquido cefalorraquidiano e da atividade enzimática das óxido nítrico sintases no hipotálamo de ratos submetidos à sepse experimental / Analysis of nitrate concentration in the cerebrospinal fluid and of the enzymatic activity of nitric oxide synthase in the hypothalamus of rats submitted to experimental sepsis.
Sepsis is defined as a systemic inflammatory response to an infectious stimulus. In the initial phase of the disease the secretion of vasopressin (AVP) is increased and late is observed a reduction, although high levels of inflammatory mediators and worsening of the hypotension, which are stimuli for the hormone secretion. Nitric oxide (NO) produced by the e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/09/2012