Individuals with developmental dyslexia are often impaired in their ability to process certain linguistic and even basic non-linguistic auditory signals. Recent investigations report conflicting findings regarding impaired low-level binaural detection mechanisms associated with dyslexia. Binaural impairment has been hypothesized to stem from a general low-level processing disorder for temporally fine sensory stimuli. Here we use a new behavioral paradigm to address this issue. We compared the response times of dyslexic listeners and their matched controls in a tone-in-noise detection task. The tonal signals were either Huggins Pitch (HP), a stimulus requiring binaural processing to elicit a pitch percept, or a pure tone—perceptually similar but physically very different signals. The results showed no difference between the two groups specific to the processing of HP and thus no evidence for a binaural impairment in dyslexia. However, dyslexic subjects exhibited a general difficulty in extracting tonal objects from background noise, manifested by a globally delayed detection speed.
%0 Journal Article
%1 chait_delayed_2007
%A Chait, Maria
%A Eden, Guinevere
%A Poeppel, David
%A Simon, Jonathan Z.
%A Hill, Deborah F.
%A Flowers, D. Lynn
%D 2007
%J Brain and Language
%K journal ld neuroscience reading subscriptiononly
%N 1
%P 80--90
%R 10.1016/j.bandl.2006.07.001
%T Delayed detection of tonal targets in background noise in dyslexia
%U http://www.sciencedirect.com/science/article/pii/S0093934X06002410
%V 102
%X Individuals with developmental dyslexia are often impaired in their ability to process certain linguistic and even basic non-linguistic auditory signals. Recent investigations report conflicting findings regarding impaired low-level binaural detection mechanisms associated with dyslexia. Binaural impairment has been hypothesized to stem from a general low-level processing disorder for temporally fine sensory stimuli. Here we use a new behavioral paradigm to address this issue. We compared the response times of dyslexic listeners and their matched controls in a tone-in-noise detection task. The tonal signals were either Huggins Pitch (HP), a stimulus requiring binaural processing to elicit a pitch percept, or a pure tone—perceptually similar but physically very different signals. The results showed no difference between the two groups specific to the processing of HP and thus no evidence for a binaural impairment in dyslexia. However, dyslexic subjects exhibited a general difficulty in extracting tonal objects from background noise, manifested by a globally delayed detection speed.
@article{chait_delayed_2007,
abstract = {Individuals with developmental dyslexia are often impaired in their ability to process certain linguistic and even basic non-linguistic auditory signals. Recent investigations report conflicting findings regarding impaired low-level binaural detection mechanisms associated with dyslexia. Binaural impairment has been hypothesized to stem from a general low-level processing disorder for temporally fine sensory stimuli. Here we use a new behavioral paradigm to address this issue. We compared the response times of dyslexic listeners and their matched controls in a tone-in-noise detection task. The tonal signals were either Huggins Pitch {(HP)}, a stimulus requiring binaural processing to elicit a pitch percept, or a pure tone—perceptually similar but physically very different signals. The results showed no difference between the two groups specific to the processing of {HP} and thus no evidence for a binaural impairment in dyslexia. However, dyslexic subjects exhibited a general difficulty in extracting tonal objects from background noise, manifested by a globally delayed detection speed.},
added-at = {2011-10-10T18:24:52.000+0200},
author = {Chait, Maria and Eden, Guinevere and Poeppel, David and Simon, Jonathan Z. and Hill, Deborah F. and Flowers, D. Lynn},
biburl = {https://www.bibsonomy.org/bibtex/2149ff12d684e31c62f103618978da05c/shelley.adams},
doi = {10.1016/j.bandl.2006.07.001},
interhash = {7557961993fb1fc980a8be6a97401ee5},
intrahash = {149ff12d684e31c62f103618978da05c},
issn = {{0093-934X}},
journal = {Brain and Language},
keywords = {journal ld neuroscience reading subscriptiononly},
month = jul,
number = 1,
pages = {80--90},
timestamp = {2012-07-04T16:31:13.000+0200},
title = {Delayed detection of tonal targets in background noise in dyslexia},
url = {http://www.sciencedirect.com/science/article/pii/S0093934X06002410},
volume = 102,
year = 2007
}