Linked Life Data

19673835

Source:http://linkedlifedata.com/resource/pubmed/id/19673835

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2009-8-13
pubmed:abstractText
Research and outcomes with cochlear implants (CIs) have revealed a dichotomy in the cues necessary for speech and music recognition. CI devices typically transmit 16-22 spectral channels, each modulated slowly in time. This coarse representation provides enough information to support speech understanding in quiet and rhythmic perception in music, but not enough to support speech understanding in noise or melody recognition. Melody recognition requires some capacity for complex pitch perception, which in turn depends strongly on access to spectral fine structure cues. Thus, temporal envelope cues are adequate for speech perception under optimal listening conditions, while spectral fine structure cues are needed for music perception. In this paper, we present recent experiments that directly measure CI users' melodic pitch perception using a melodic contour identification (MCI) task. While normal-hearing (NH) listeners' performance was consistently high across experiments, MCI performance was highly variable across CI users. CI users' MCI performance was significantly affected by instrument timbre, as well as by the presence of a competing instrument. In general, CI users had great difficulty extracting melodic pitch from complex stimuli. However, musically experienced CI users often performed as well as NH listeners, and MCI training in less-experienced subjects greatly improved performance. With fixed constraints on spectral resolution, such as occurs with hearing loss or an auditory prosthesis, training and experience can provide considerable improvements in music perception and appreciation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1749-6632
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
1169
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
518-33
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Melodic contour identification and music perception by cochlear implant users.
pubmed:affiliation
Department of Communication and Auditory Neuroscience, House Ear Institute, Los Angeles, California 90057, USA. jgalvin@hei.org
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural