2012
DOI: 10.1016/j.neuroscience.2012.07.062
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Effects of cross-modal selective attention on the sensory periphery: Cochlear sensitivity is altered by selective attention

Abstract: There is increasing evidence that alterations in the focus of attention results in changes in neural responding at the most peripheral levels of the auditory system. To date, however, those studies have not ruled out differences in task demands or overall arousal in explaining differences in responding across intermodal attentional conditions. The present study sought to compare changes in the response of cochlear outer hair cells, employing distortion product otoacoustic emissions (DPOAEs), under different, b… Show more

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Cited by 41 publications
(58 citation statements)
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“…More generally, we have demonstrated that multisensory interactions occur at the most peripheral possible point in the auditory system and that this interaction is both systematic and substantial. This observation builds on studies showing that attention-either auditory-guided or visually-guided-can also modulate the auditory periphery (21)(22)(23)(24)(25)(26)(27). Our findings also raise the intriguing possibility that efferent pathways in other sensory systems-for instance, those leading to the retina (67-77)-also carry multisensory information to help refine peripheral processing.…”
Section: Discussionsupporting
confidence: 78%
See 1 more Smart Citation
“…More generally, we have demonstrated that multisensory interactions occur at the most peripheral possible point in the auditory system and that this interaction is both systematic and substantial. This observation builds on studies showing that attention-either auditory-guided or visually-guided-can also modulate the auditory periphery (21)(22)(23)(24)(25)(26)(27). Our findings also raise the intriguing possibility that efferent pathways in other sensory systems-for instance, those leading to the retina (67-77)-also carry multisensory information to help refine peripheral processing.…”
Section: Discussionsupporting
confidence: 78%
“…In short, the actions of the MEMs and OHCs affect not only the response to incoming sound but also transmit vibrations backwards to the eardrum. Both the MEMs and OHCs are subject to descending control by signals from the central nervous system (see refs: 18, 19, 20) for reviews), allowing the brain to adjust the cochlear encoding of sound in response to previous or ongoing sounds in either ear and based on global factors, such as attention (21)(22)(23)(24)(25)(26)(27). The collective action of these systems can be measured in real time with a microphone placed in the ear canal (28).…”
Section: Introductionmentioning
confidence: 99%
“…Does this imply that object-based attention cannot be a valid explanation of the observed effects? In our view, this is not the case because the corticofugal (descending) auditory system [66] modulates response properties in the thalamus [67], [68], the midbrain [69] and even in the cochlea [70], [71]. Thus, corticofugal projections may contribute to selective attention because they can enhance neuronal responses to relevant stimuli and suppress responses to irrelevant stimuli [72], [73].…”
Section: Discussionmentioning
confidence: 99%
“…Although we have focused largely on the ascending (afferent) auditory pathway, efferent connections occur at every level of the auditory system [84] and allow higher-level cortical regions to modify auditory peripheral processing [85-88]. At the cortical level, ongoing oscillations in auditory cortex track the acoustic speech signal [89,90], a process which can be modulated by directed attention (for example, to focus on a target talker instead of a competing talker) [91-94].…”
Section: Beyond Classical Language Areas: Cortical Network Supportinmentioning
confidence: 99%