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Lukic S, Mandelli ML, Welch A, Jordan K, Shwe W, Neuhaus J, Miller Z, Hubbard HI, Henry M, Miller BL, Dronkers NF, Gorno-Tempini ML. Neurocognitive basis of repetition deficits in primary progressive aphasia. Brain Lang 2019; 194:35-45. [PMID: 31055171 PMCID: PMC6669076 DOI: 10.1016/j.bandl.2019.04.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 04/10/2019] [Accepted: 04/13/2019] [Indexed: 05/15/2023]
Abstract
Previous studies indicate that repetition is affected in primary progressive aphasia (PPA), particularly in the logopenic variant, due to limited auditory-verbal short-term memory (avSTM). We tested repetition of phrases varied by length (short, long) and meaning (meaningful, non-meaningful) in 58 participants (22 logopenic, 19 nonfluent, and 17 semantic variants) and 21 healthy controls using a modified Bayles repetition test. We evaluated the relation between cortical thickness and repetition performance and whether sub-scores could discriminate PPA variants. Logopenic participants showed impaired repetition across all phrases, specifically in repeating long phrases and any phrases that were non-meaningful. Nonfluent, semantic, and healthy control participants only had difficulty repeating long, non-meaningful phrases. Poor repetition of long phrases was associated with cortical thinning in left temporo-parietal areas across all variants, highlighting the importance of these areas in avSTM. Finally, Bayles repetition phrases can assist classification in PPA, discriminating logopenic from nonfluent/semantic participants with 89% accuracy.
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Affiliation(s)
- Sladjana Lukic
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA 94158, USA.
| | - Maria Luisa Mandelli
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA 94158, USA
| | - Ariane Welch
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA 94158, USA
| | - Kesshi Jordan
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA 94158, USA
| | - Wendy Shwe
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA 94158, USA
| | - John Neuhaus
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA 94158, USA
| | - Zachary Miller
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA 94158, USA
| | | | - Maya Henry
- University of Texas, Austin, TX 78705, USA
| | - Bruce L Miller
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA 94158, USA
| | - Nina F Dronkers
- University of California, Berkeley, CA 94720, USA; University of California, Davis, CA 95616, USA
| | - Maria Luisa Gorno-Tempini
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA 94158, USA
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