University of Groningen
Distinguishing a phonological encoding disorder from Apraxia of Speech in individuals with
aphasia by using EEG
den Hollander, Jakolien
DOI:
10.33612/diss.151478630
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Publication date: 2021
Link to publication in University of Groningen/UMCG research database
Citation for published version (APA):
den Hollander, J. (2021). Distinguishing a phonological encoding disorder from Apraxia of Speech in individuals with aphasia by using EEG. University of Groningen. https://doi.org/10.33612/diss.151478630
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Propositions
accompanying the dissertationDistinguishing a phonological encoding disorder from Apraxia of Speech
in individuals with aphasia by using EEG
by Jakolien den Hollander
1. An EEG protocol can help to uncover the disordered process in a phonological encoding disorder and in Apraxia of Speech in a group of individuals with aphasia, but it is not yet possible to distinguish the origin of the deficit at an individual level (This thesis). 2. The process of lemma retrieval in non-brain-damaged adults can be identified by using
EEG and a picture naming task with items manipulated for cumulative semantic inter-ference (Chapters 2 & 3).
3. A picture naming task with items manipulated for Age of Acquisition combined with EEG can be used to track the process of lexeme retrieval in non-brain-damaged adults (Chapters 2 & 3).
4. The lemma and lexeme retrieval stages interact (Chapters 2 & 3).
5. EEG combined with reading nonwords manipulated for length in phonemes and syllable frequency can be used to identify the processes of phonological and phonetic encoding in non-brain-damaged adults (Chapters 2 & 3).
6. Age has impact on the efficiency of the processes underlying speech production stages, but not on the neurons that are involved in these stages (Chapter 3).
7. Both individuals with aphasia and Apraxia of Speech and individuals with a phonological encoding disorder differ from non-brain-damaged individuals in phonetic encoding, because the phonological and phonetic encoding stages interact; this is reflected in the EEG (Chapter 4).
8. “Far better an approximate answer to the right question, which is often vague, than an exact answer to the wrong question, which can always be made precise.” - John W. Tukey 9. “If the road is easy, you’re likely going the wrong way.” - Terry Goodkind
