Auditory-pupillary responses in deaf subjects

Kitajima, Naoharu; Otsuka, Koji; Ogawa, Yasuo; Shimizu, Shigetaka; Hayashi, Momoko; Ichimura, Akihide; Suzuki, Mamoru

doi:10.3233/ves-2010-0362

Cited by 6 publications

(5 citation statements)

References 12 publications

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“…However, age differences between the groups may have confounded this effect ( Winn, 2016 ). Finally, Kitajima et al. (2010) assessed the pupil response to loud clicks in deaf participants and did not observe a difference in their response when compared with that of listeners with normal hearing.…”

Section: Resultsmentioning

confidence: 99%

“…However, age differences between the groups may have confounded this effect (Winn, 2016). Finally, Kitajima et al (2010) assessed the pupil response to loud clicks in deaf participants and did not observe a difference in their response when compared with that of listeners with normal hearing. In summary, the relatively few studies directly assessing the effect of hearing status on the pupil dilation response to auditory stimuli have shown mixed results.…”

Section: Listener Factors Influencing the Pupil Dilation Response To ...mentioning

confidence: 99%

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The Pupil Dilation Response to Auditory Stimuli: Current State of Knowledge

2018

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The measurement of cognitive resource allocation during listening, or listening effort, provides valuable insight in the factors influencing auditory processing. In recent years, many studies inside and outside the field of hearing science have measured the pupil response evoked by auditory stimuli. The aim of the current review was to provide an exhaustive overview of these studies. The 146 studies included in this review originated from multiple domains, including hearing science and linguistics, but the review also covers research into motivation, memory, and emotion. The present review provides a unique overview of these studies and is organized according to the components of the Framework for Understanding Effortful Listening. A summary table presents the sample characteristics, an outline of the study design, stimuli, the pupil parameters analyzed, and the main findings of each study. The results indicate that the pupil response is sensitive to various task manipulations as well as interindividual differences. Many of the findings have been replicated. Frequent interactions between the independent factors affecting the pupil response have been reported, which indicates complex processes underlying cognitive resource allocation. This complexity should be taken into account in future studies that should focus more on interindividual differences, also including older participants. This review facilitates the careful design of new studies by indicating the factors that should be controlled for. In conclusion, measuring the pupil dilation response to auditory stimuli has been demonstrated to be sensitive method applicable to numerous research questions. The sensitivity of the measure calls for carefully designed stimuli.

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Section: Resultsmentioning

confidence: 99%

Section: Listener Factors Influencing the Pupil Dilation Response To ...mentioning

confidence: 99%

The Pupil Dilation Response to Auditory Stimuli: Current State of Knowledge

2018

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“…At least in part, the effects of vestibular afferents on cognitive functions could be mediated by the central noradrenergic system arising from the LC, whose neurons are affected by the labyrinthine input (Manzoni et al, 1989 ; Kaufman et al, 1992 ), as confirmed by the observation that vestibular stimulation induces changes in pupil size (Kitajima et al, 2010 , 2013 ), which is a reliable indicator of LC activity (Rajkowski et al, 1993 , 1994 ; Murphy et al, 2014 ). It should be reminded that the vestibular influences on the LC have been proposed as the cause of the development of hemispheric specialization, since, during foetal development, the asymmetric position of the head is likely to favor activation of the left labyrinth during maternal locomotion, leading to an asymmetric development of several central structures (Previc, 1991 ).…”

Section: Trigeminal Visceral and Vestibular Influences On Brain Funcmentioning

confidence: 93%

Trigeminal, Visceral and Vestibular Inputs May Improve Cognitive Functions by Acting through the Locus Coeruleus and the Ascending Reticular Activating System: A New Hypothesis

et al. 2018

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It is known that sensory signals sustain the background discharge of the ascending reticular activating system (ARAS) which includes the noradrenergic locus coeruleus (LC) neurons and controls the level of attention and alertness. Moreover, LC neurons influence brain metabolic activity, gene expression and brain inflammatory processes. As a consequence of the sensory control of ARAS/LC, stimulation of a sensory channel may potential influence neuronal activity and trophic state all over the brain, supporting cognitive functions and exerting a neuroprotective action. On the other hand, an imbalance of the same input on the two sides may lead to an asymmetric hemispheric excitability, leading to an impairment in cognitive functions. Among the inputs that may drive LC neurons and ARAS, those arising from the trigeminal region, from visceral organs and, possibly, from the vestibular system seem to be particularly relevant in regulating their activity. The trigeminal, visceral and vestibular control of ARAS/LC activity may explain why these input signals: (1) affect sensorimotor and cognitive functions which are not directly related to their specific informational content; and (2) are effective in relieving the symptoms of some brain pathologies, thus prompting peripheral activation of these input systems as a complementary approach for the treatment of cognitive impairments and neurodegenerative disorders.

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“…Because of these it could not be ascertained if the Cr enrichment occurred in the inner part of oxide scale or at the alloy surface. However, from TEM-EDS analysis [18], Cr enrichment was not found in the lower part of the Al 2 O 3 scale. Therefore Cr enrichment is thought to occur within the alloy surface.…”

Section: Resultsmentioning

confidence: 86%

The Effect of Additional Elements on Oxide Scale Evolution of Fe-20at.%Cr-10at.%Al Alloy at 900 °C in Air

Kitajima

Hayashi

Ukai

et al. 2008

MSF

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The oxidation behavior of Fe-20at.%Cr-10at.%Al alloys with a small amount of an additional element such as W, Cu, Mn, Nb, Mo, Re, Co or Ti was investigated at 900 °C for up to 625hr. The fourth element addition to the FeCrAl alloy could be classified into two groups; elements (Mn, Nb, Ti) that are contained in the Al2O3 scale, and elements (W, Mo, Re, Co) which are not present in the scale. In the latter case, the elements (W, Cu) caused scale spallation. The rumpling of alloys with Mn, Nb or Ti was smaller than that of the other alloys. The surface of the alloy with Ti was the smooth. Pt marker experiments suggested that the Al2O3 scale formed on the alloy with Ti grew by inward diffusion of O, whilst the Al2O3 scale formed on the FeCrAl alloy grew by both outward diffusion of Al and inward diffusion of O. This different growth behavior due to the elements incorporated in the Al2O3 scale could have an effect on the surface rumpling behavior.

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Auditory-pupillary responses in deaf subjects

Cited by 6 publications

References 12 publications

The Pupil Dilation Response to Auditory Stimuli: Current State of Knowledge

The Pupil Dilation Response to Auditory Stimuli: Current State of Knowledge

Trigeminal, Visceral and Vestibular Inputs May Improve Cognitive Functions by Acting through the Locus Coeruleus and the Ascending Reticular Activating System: A New Hypothesis

The Effect of Additional Elements on Oxide Scale Evolution of Fe-20at.%Cr-10at.%Al Alloy at 900 °C in Air

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