Brain classification reveals the right cerebellum as the best biomarker of dyslexia

BMC Neuroscience

Table 1 Mean behavioural results split by brain sub-groups

	Controls	LCD/LLN	LCD/HLN	HCD/LLN	HCD/HLN
Syllabic deletion
Scores	27.1 ± 5.7	17.1 ± 3.8	17.4 ± 1.6	18.6 ± 1.1	17.9 ± 3.1
RTs	90.7 ± 14.8	162.7 ± 102	127.4 ± 29.7	104.6 ± 25.3	120 ± 44.3
Sound categorization
Scores	16.3 1.9	13.7 ± 2.3	13.8 ± 4.8	13.6 ± 2	15.1 ± 2.6
RTs	235.6 ± 73.6	265 ± 79.5	248.5 ± 61.7	302 ± 100	256.5 ± 76
Phoneme deletion
Scores	38.2 ± 2.9	29.5 ± 8.3	32.4 ± 5.5	38.3 ± 1.5	35.5 ± 3.6
RTs	136.5 ± 49.5	188.36 ± 78	232.7 ± 106	162.6 ± 45.7	135.5 ± 34
Spoonerism
Scores	11.5 ± 0.7	8.5 ± 2.9	8 ± 2.7	11.3 ± 0.5	9.8 ± 1.9
Irregular word spelling
Scores	13.1 ± 1.3	7.2 ± 3.3	8.5 ± 3.7	10 ± 2.6	9.2 ± 2.1
Loan word reading
Scores	29.3 ± 0.8	24.4 ± 5.5	24.8 ± 4	28.6 ± 1.2	26.6 ± 2.8
Word reading
Scores	35.7 ± 8.1	33 ± 8.8	31 ± 11	39.6 ± 0.5	31.8 ± 10
RTs	512 ± 58.7	756.2 ± 159	753.2 ± 52	689 ± 158.9	726 ± 236
Pseudoword reading
Scores	34.7 ± 8.2	27.8 ± 9.7	24.2 ± 9.7	37.3 ± 2	28 ± 10.5
RTs	620 ± 113.6	1033 ± 313.9	982.9 ± 172	996 ± 254.8	1056 ± 412
Digit reading
RTs	14.9 ± 2.1	19.85 ± 3.56	22.9 ± 2.4	17.5 ± 1.8	19.63 ± 2.8

Table 1: For each behavioural test, the mean and standard deviation is reported for control subjects (controls) and each of the dyslexic brain subgroups (controls, lower cerebellar declive and lower lentiform nucleus grey matter volumes than controls (LCD/LLN), lower cerebellar declive and higher lentiform nucleus grey matter volumes than controls (LCD/HLN), higher cerebellar declive and lower lentiform nucleus grey matter volumes than controls (HCD/LLN), higher cerebellar declive and higher lentiform nucleus grey matter volumes than controls (HCD/HLN)).

ISSN: 1471-2202