Acoustic Stimulation
Mostrando 13-24 de 39 artigos, teses e dissertações.
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13. Resposta comportamental e hormonal de machos não reprodutores de sagüi, callithrix jacchus, a estímulos sensoriais de filhotes não aparentados
Parental care in mammals is influenced by somatosensory stimuli from infants, such as vocalization and sight and by changes in the hormone levels of caretakers. The aim of this study was to evaluate the behavioral and hormonal responses of twelve non reproductive adult male common marmosets (Callithrix jacchus) to infant cues, vocalization recordings, sight
Publicado em: 2009
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14. Influência da idade na atividade do trato olivococlear medial eferente sobre as propriedades mecânicas da cóclea em indivíduos ouvintes normais / Age influence in the activity of medial efferent olivocochlear tract upon mechanical properties of cochlea in normal hearing individuals
Medial olivocochlear tract makes the efferent control of the outer hair cells, controlling the slow contractions and mitigating rapid contractions. Upon the appearance of techniques for the investigation of the amplitude of otoacoustic emissions with and without acoustic stimulation against, ipsi and bilaterally, it is now possible to stimulate clinically th
Publicado em: 2007
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15. Complexo N1-P2-N2 em indivíduos com transtorno de processamento auditivo submetidos ao treinamento auditivo / N1-P2-N2 complex in indivíduals with auditory processing disorder submitted to auditory training
INTRODUÇÃO: O uso de testes eletrofisiológicos associados a avaliação comportamental, vem se tornando uma prática clínica cada vez mais freqüente no campo da audiologia, possibilitando um diagnóstico e monitoramento do Transtorno de Processamento Auditivo mais preciso. OBJETIVOS: O objetivo geral deste estudo foi verificar as características (latê
Publicado em: 2007
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16. "Cardiotocografia estimulada em gestações de baixo risco: estudo comparativo da resposta cardíaca fetal à estimulação vibratória e sônica" / Stimulated cardiotocography in low-risk pregnancies: comparative study of fetal cardiac response to vibratory and sonic stimulation
Trata-se de estudo prospectivo, comparativo da resposta da freqüência cardíaca fetal (FCF) à estimulação vibratória e sônica, quanto à amplitude e duração, em 113 fetos de gestações de baixo risco. A população estudada foi discriminada em quatro grupos: 1) 25 semanas a 28 semanas e seis dias; 2) 29 semanas a 32 semanas e seis dias; 3) 33 seman
Publicado em: 2006
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17. O uso da música e de estímulos vocais em pacientes em estado de coma: relação entre estímulo auditivo, sinais vitais, expressão facial e escalas de Glasgow e Ramsay. / The use of music and vocal stimuli in patients in coma state relations between auditory stimulus, vital signs, face expression and Scale of Glasgow or Scale of Ramsay.
The objectives of this work was: (1) to check the music and verbal message influence on the vital signs and face expression of the patients in physiological or induced coma; (2) connect the existence of patients responsiveness with Glasgow Coma Scale or with Ramsay Sedation Scale, considering the musical and verbal stimuli. It is a randomized controlled cl
Publicado em: 2006
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18. Variação circadiana na habituação da resposta exploratoria a estimulos sonoros em pombos (Columba livia), submetidos a condições de claro-escuro e de claro constante
The present work investigated habituation learning to acoustic stimulation in the context of temporal organization of behavior. The process of habituation of the exploratory responses to sound was analvsed in three experiments. The main purpose of these experiments was the analysis of these responses as function of the time of habituation sessions, i.e., mor
Publicado em: 1993
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19. Experience-dependent corticofugal adjustment of midbrain frequency map in bat auditory system
Recent studies of corticofugal modulation of auditory information processing indicate that cortical neurons mediate both a highly focused positive feedback to subcortical neurons “matched” in tuning to a particular acoustic parameter and a widespread lateral inhibition to “unmatched” subcortical neurons. This cortical function for the adjustment and
The National Academy of Sciences.
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20. Acoustic stimulation causes tonotopic alterations in the length of isolated outer hair cells from guinea pig hearing organ.
Isolated outer hair cells from the mammalian cochlea exhibit a motile response to electrical or chemical stimulation. Here we show that isolated outer hair cells can also respond to acoustic stimulation, in the form of a tone burst of 200 Hz, by either shortening or lengthening depending on their cochlear location. Cells from the apical region of the cochlea
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21. Disruption of the neural response to rapid acoustic stimuli in dyslexia: Evidence from functional MRI
The biological basis for developmental dyslexia remains unknown. Research has suggested that a fundamental deficit in dyslexia is the inability to process sensory input that enters the nervous system rapidly and that deficits in processing rapid acoustic information are associated with impaired reading. Functional magnetic resonance imaging (fMRI) was u
The National Academy of Sciences.
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22. Steering responses of flying crickets to sound and ultrasound: Mate attraction and predator avoidance*
We investigated the steering responses of tethered, flying adult female crickets (Teleogryllus oceanicus) to acoustic stimulation. Crickets responded directionally to directional sound stimulation by bending their abdomens and hind legs to one side. We interpret this response as an attempt to turn. When stimulated with a model of conspecific calling song wit
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23. Induction of behavioral associative memory by stimulation of the nucleus basalis
The nucleus basalis (NB) has been implicated in memory formation indirectly, by lesions, pharmacological manipulations, and neural correlates of learning. Prior findings imply that engagement of the NB during learning promotes memory storage. We directly tested this NB-memory hypothesis by determining whether stimulation of the NB induces behavioral associat
The National Academy of Sciences.
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24. Order-sensitive plasticity in adult primary auditory cortex
The neural response to a stimulus presented as part of a rapid sequence is often quite different from the response to the same stimulus presented in isolation. In primary auditory cortex (A1), although the most common effect of preceding stimuli is inhibitory, most neurons can also exhibit response facilitation if the appropriate spectral and temporal separa
The National Academy of Sciences.