Search results for "Hearing"
showing 10 items of 473 documents
An experimental investigation of the nonlinear refractive index (n2) of carbon disulfide and toluene by spectral shearing interferometry and z-scan t…
2003
International audience; The recently proposed spectral shear interferometry and the well-known z-scan techniques were employed for the determination of the nonlinear refractive index n2 of CS2, toluene and fused silica. The determined n2 values by both techniques were found to be in very good agreement. In addition, the role of the repetition rate of the laser is also investigated revealing its importance for the correct determination of both the size and the sign of the nonlinearity.
Diffusiosmessungen an polymeren in lösung mittels tracer-technik
2007
A cell for measuring coefficients of diffusion and self-diffusion by tracer techniques is described. The cell consists of two Teflon disks and is of the rotational shearing type. The amount of polymer is minimal (about 0.1 ml. for both components). Labeled and unlabeled fractionated polymethacrylate of identical molecular weight distribution was used to determine diffusion coefficients in benzene and toluene. The classical optical measurement is impossible, for these solvents exhibit a refraction index very close to that of polymethacrylate. In acetone, where optical as well as tracer techniques are applicable, the measured diffusion coefficients of the two methods are in good agreement. Al…
Transition from thin- to thick-skinned tectonics and consequences for nappe formation: Numerical simulations and applications to the Helvetic nappe s…
2015
Abstract We use two-dimensional numerical simulations to study the deformation style and the formation of nappes during the shortening of basement–cover systems with half-grabens. We perform simulations with only linear and power-law viscous rheology, and also thermo-mechanical simulations with viscoelastoplastic rheology and temperature-dependent viscosities. The accumulated, area-averaged strain is calculated for the sediments, es, and for the basement, eb, to quantify the deformation style. The results show that the transition from thin-skinned dominated (es/eb > 1) to thick-skinned dominated (es/eb ≤ 1) deformation is controlled by two effective viscosity ratios: the ratio of viscosity …
Tonalite sill emplacement at an oblique plate boundary: northeastern margin of the Bohemian Massif
1997
Abstract A tonalitic sill has been examined at the Variscan transpressive boundary of the Lugian and Silesian plates at the NE margin of the Bohemian Massif. A structural, petrological and geochronological study reveals that it was emplaced syn-tectonically with major ductile shearing in lower crustal rocks. Magmatic and pre-rheological critical melt percentage (RCMP) fabrics are concordant with the hanging wall structures but discordant with those of the footwall. The AMS study shows the predominance of flattening strain at the margins and plane strain fabrics in the core. Numerical modelling of AMS fabrics is in good agreement with the hypothesis of magma flow and deformation in oblique t…
The extensional Messaria shear zone and associated brittle detachment faults, Aegean Sea, Greece
2005
Structural, thermochronological and metamorphic data are used to elucidate the tectonic nature and evolution of the ductile extensional Messaria shear zone and the associated brittle Messaria and Fanari detachment faults, which exhumed their footwall from mid-crustal depths on the island of Ikaria in the Aegean. Thermobarometric data indicate that the Messaria shear zone formed at 350–>400 °C and 3–4 kbar (i.e. at a depth of c . 15 km). Normal faulting was accompanied by the intrusion of two granites, which together with the thermobarometric data indicate a relatively high thermal field gradient of 25–35 °C km −1 . Zircon and apatite fission-track and apatite (U–Th)/He ages demonstrate rapi…
Advantages of binaural hearing provided through bimodal stimulation via a cochlear implant and a conventional hearing aid: a 6-month comparative stud…
2005
Our study data demonstrate the additional benefit derived from continued use of a contralateral hearing aid (HA) post-cochlear implantation for speech recognition ability in quiet and in noise. Postoperative bimodal stimulation is recommended for all subjects who show some speech recognition ability in the contralateral ear as it may offer binaural listening advantages in various listening situations encountered in everyday life.To assess the benefits derived from bimodal stimulation for experienced HA users implanted with a cochlear implant (CI) (score=20% in disyllabic test). The correlation between pre- and postoperative performance on speech perception measures was examined to determine…
Effect of Rotating Auditory Scene on Postural Control in Normal Subjects, Patients With Bilateral Vestibulopathy, Unilateral, or Bilateral Cochlear I…
2018
International audience; Objective: The aim of this study was to investigate the impact of a rotating sound stimulation on the postural performances in normal subjects, patients with bilateral vestibulopathy (BVP), unilateral (UCI), and bilateral (BCD cochlear implantees.Materials and Methods: Sixty-nine adults were included (32 women and 37 men) in a multicenter prospective study. The group included 37 healthy subjects, 10 BVP, 15 UCI, and 7 BCI patients. The average of age was 47 +/- 2.0 (range: 23-82). In addition to a complete audiovestibular work up, a dynamic posturography (Multitest Framiral, Grasse) was conducted in silence and with a rotating cocktail party sound delivered by headph…
S. Butler - S. Nooter, eds. Sound and the Ancient Senses (The Senses in Antiquity, vol. 6), London-New York: Routledge, 2019
2021
Review of S. Butler - S. Nooter, eds. Sound and the Ancient Senses (The Senses in Antiquity, vol. 6), London-New York: Routledge, 2019. An essential read for all those interested in the ‘soundscape’ of Antiquity – from rites to the human body, the physiology of hearing, myth, music on the stage, ancient emotions and contemporary attempts in reconstructing ancient sounds –, the volume offers a broad perspective on sounds and hearing in Antiquity by means of its fourteen essays, distributed into three parts (“Ancient soundscapes”, “Theories of sound”, “Philology and sound”).
La morfología flexiva en el trastorno específico del lenguaje y en la deprivación sociocultural
2007
Resumen Los ninos con trastorno especifico del lenguaje (TEL) y los ninos procedentes de ambientes desfavorecidos socioculturalmente (DS) experimentan dificultades en la morfologia flexiva. Nos propusimos como objetivo general caracterizar las dificultades morfologicas de ambos grupos. Para ello, se han utilizado dos tipos de medidas morfologicas flexivas en tres grupos de sujetos: desarrollo normal del lenguaje, TEL y DS. Las primeras miden la capacidad para aplicar reglas morfologicas inventadas sin carga lexico-semantica especifica y no mediatizadas por aprendizajes previos, y las segundas miden los efectos de los aprendizajes morfologicos ambientales. Nuestros resultados senalan que tan…
Ançlisis perceptual de las caracterêsticas del habla en personas afectas de ataxias hereditarias
1998
Resumen Dada la escasez de estudios del habla en personas hablantes de espanol afectadas de ataxias hereditarias, se considero la realizacion del presente trabajo, que recoge el estudio de las grabaciones de un grupo de 35 personas, 32 con enfermedad de Friedreich y tres con atrofia olivo-ponto-cerebelosa, de todo el ambito geografico nacional, mediante analisis perceptual, individualizando caracteristicas segmentales y prosodicas de sus producciones orales-verbales-linguisticas a partir de tareas de habla espontanea y lectura. Se ofrecen datos acerca de la presencia de procesos fonologicos y habla sistematizada que deberian ser el punto de partida de la actuacion logopedica. Igualmente pod…