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Research Articles

Anomia in left hemisphere stroke, multiple sclerosis and Parkinson’s disease – a comparative study

ORCID Icon, ORCID Icon, ORCID Icon, , ORCID Icon & ORCID Icon
Pages 2294-2316 | Received 21 Feb 2022, Accepted 25 May 2023, Published online: 09 Jun 2023

Figures & data

Table 1. Participants.

Table 2. Scores on assessments.

Table 3. Group comparisons on quantitative aspects of word-finding difficulties.

Table 4. Group comparisons on qualitative aspects of word-finding difficulties.

Figure 1. Confrontation-naming accuracy (in per cent) for high-frequency nouns and verbs (OANB, top left) and low-frequency nouns (BNT, top right). OANB: Object and Action Naming Battery; BNT: Boston Naming Test; MSAS: Moderate to severe anomia in stroke; MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Box plots demonstrating significantly lower confrontation naming accuracy in the MSAS-group compared to the other groups for both low (BNT) and high frequency (OANB) words. The other groups have similar high OANB-scores. The BNT-results are wide-ranging and overlapping from low to high, in order MSAS, MAS, PD and MS.
Figure 1. Confrontation-naming accuracy (in per cent) for high-frequency nouns and verbs (OANB, top left) and low-frequency nouns (BNT, top right). OANB: Object and Action Naming Battery; BNT: Boston Naming Test; MSAS: Moderate to severe anomia in stroke; MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Figure 2. Scores on the oral verbal-fluency tasks. MSAS: Moderate to severe anomia in stroke; MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis; COSEF: complex oral semantic verbal fluency.

Box plots indicating impaired oral fluency in the FAS, verb, animal and COSEF tasks, across all groups. The scores of both stroke groups are significantly lower than the PD and MS groups.
Figure 2. Scores on the oral verbal-fluency tasks. MSAS: Moderate to severe anomia in stroke; MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis; COSEF: complex oral semantic verbal fluency.

Figure 3. Total scores (percentages) on the re-telling task, based on main-concept analysis (MCA). MSAS: Moderate to severe anomia in stroke. MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Box plots showing results in the re-telling task, increasing across the groups in the order MSAS, MAS, PD and MS.
Figure 3. Total scores (percentages) on the re-telling task, based on main-concept analysis (MCA). MSAS: Moderate to severe anomia in stroke. MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Figure 4. Self-perceived communicative participation as reported in the 10 –item short-form Communicative Participation Item Bank (CPIB), where interference with communicative participation were rated from 3 (“not at all”) to 0 (“very much”). MSAS: Moderate to severe anomia in stroke; MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Box plots showing that all four groups had similar CPIB ratings.
Figure 4. Self-perceived communicative participation as reported in the 10 –item short-form Communicative Participation Item Bank (CPIB), where interference with communicative participation were rated from 3 (“not at all”) to 0 (“very much”). MSAS: Moderate to severe anomia in stroke; MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Figure 5. Response time (RT) in seconds per item in confrontation naming of high-frequency nouns and verbs (OANB) and low-frequency nouns (BNT). OANB: Object and Action Naming Battery (high-frequency items); BNT: Boston Naming Test (low-frequency items); MSAS: Moderate to severe anomia in stroke; MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Box plots on naming response time decreasing in the order MSAS, MAS, PD and MS for high frequency OANB items while similar between all groups for low frequency BNT items.
Figure 5. Response time (RT) in seconds per item in confrontation naming of high-frequency nouns and verbs (OANB) and low-frequency nouns (BNT). OANB: Object and Action Naming Battery (high-frequency items); BNT: Boston Naming Test (low-frequency items); MSAS: Moderate to severe anomia in stroke; MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Figure 6. Categories of inadequate responses in confrontation naming, as proportions (top) and as mean numbers of cases (bottom). MSAS: Moderate to severe anomia in stroke. MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Column and pie charts on inaccurate response types across the groups, both phonological and semantic in the stroke groups while predominately semantic in the PD and MS groups.
Figure 6. Categories of inadequate responses in confrontation naming, as proportions (top) and as mean numbers of cases (bottom). MSAS: Moderate to severe anomia in stroke. MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Figure 7. Percentages of correctly named nouns and verbs in OANB confrontation naming. MSAS: Moderate to severe anomia in stroke. MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Chart, box and whisker chart. Naming accuracy of verbs are marginally lower than that of nouns in all groups except the MAS group, where both word classes are equally impaired. The results of the MSAS group are significantly lower than the other groups.
Figure 7. Percentages of correctly named nouns and verbs in OANB confrontation naming. MSAS: Moderate to severe anomia in stroke. MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis.

Figure 8. Results from the main-concept analysis (MCA) of the re-telling task: percentages of accurate and compete (AC), accurate but incomplete (AI), incorrect (IN) and absent (AB) main concepts. MSAS: Moderate to severe anomia in stroke. MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis. The corresponding proportions in a reference group were 82.7% AC, 5.7% AI, 2.0% IN and 9.6% AB.

Box plots showing the percentage of main concepts conveyed in an accurate and complete, accurate but incomplete or an incorrect manner, as well as percentage absent main concepts. The latter category is most common in the MSAS group.
Figure 8. Results from the main-concept analysis (MCA) of the re-telling task: percentages of accurate and compete (AC), accurate but incomplete (AI), incorrect (IN) and absent (AB) main concepts. MSAS: Moderate to severe anomia in stroke. MAS: Mild anomia in stroke; PD: Parkinson’s disease; MS: Multiple sclerosis. The corresponding proportions in a reference group were 82.7% AC, 5.7% AI, 2.0% IN and 9.6% AB.

Table 5. Correlations between self-reports and formal assessments.

Table Appendix 1. Results when the PD participant with extreme value in the confrontation naming task was excluded.