Endogenous auditory frequency-based attention modulates electroencephalogram-based measures of obligatory sensory activity in humans
Citation:
Sheedy, CM, Power, AJ, Reilly, RB, Crosse, MJ, Loughnane, GM, Lalor, EC, Endogenous auditory frequency-based attention modulates electroencephalogram-based measures of obligatory sensory activity in humans, NEUROREPORT, 25, 4, 2014, 219-225Download Item:
Abstract:
Auditory selective attention is the ability to enhance the processing of a single sound source, while simultaneously suppressing the processing of other competing sound sources. Recent research has addressed a long-running debate by showing that endogenous attention produces effects on obligatory sensory responses to continuous and competing auditory stimuli. However, until now, this result has only been shown under conditions where the competing stimuli differed in both their frequency characteristics and, importantly, their spatial location. Thus, it is unknown whether endogenous selective attention based only on nonspatial features modulates obligatory sensory processing. Here, we investigate this issue using a diotic paradigm, such that competing auditory stimuli differ in frequency, but had no separation in space. We find a significant effect of attention on electroencephalogram-based measures of obligatory sensory processing at several poststimulus latencies. We discuss these results in terms of previous research on feature-based attention and by comparing our findings with the previous work using stimuli that differed both in terms of spatial and frequency-based characteristics.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
09-RFP-NES2382
Author's Homepage:
http://people.tcd.ie/reillyriDescription:
PUBLISHED
Author: REILLY, RICHARD
Type of material:
Journal ArticleSeries/Report no:
NEUROREPORT25
4
Availability:
Full text availableKeywords:
Auditory selective attentionSubject (TCD):
Neuroscience , Next Generation Medical DevicesDOI:
http://dx.doi.org/10.1097/WNR.0000000000000070ISSN:
0959-4965Metadata
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