Table 2.
Gross cerebellar volumes.
| Region | NC | ALN | ALI | SLI | Overall | Post Hoc Contrasts | |||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| n = 11 | n = 6 | n = 16 | n = 9 | F | P | NC & ALN vs. ALI & SLI | NC vs. ALN | SLI vs. ALI | |
| Mean ± SD | |||||||||
| Raw Volume (cc) | |||||||||
| Whole cerebellum | 149.8 ± 10.8 | 148.5 ± 9.3 | 153.5 ± 12.1 | 145.3 ± 10.1 | 1.1 | 0.4 | |||
| Cerebellar White Matter | 26.7 ± 2.9 | 26.5 ± 1.9 | 28.2 ± 2.8 | 25.1 ± 1.9 | 3.0 | 0.04 | * | ||
| Cerebellar Cortex | 123.1 ± 10.0 | 122.0 ± 8.2 | 125.3 ± 10.4 | 120.2 ± 8.8 | 0.6 | 0.7 | |||
| Ratio to whole cerebellum volume (%) | |||||||||
| Cerebellar White Matter | 17.9 ± 1.8 | 17.9 ± 1.0 | 18.4 ± 1.4 | 17.3 ± 0.9 | 1.3 | 0.3 | |||
| Cerebellar Cortex | 82.1 ± 1.8 | 82.1 ± 1.0 | 81.6 ± 1.4 | 82.7 ± 0.9 | 1.3 | 0.3 | |||
| Symmetry Coefficient a | |||||||||
| Whole cerebellum | 0.4 ± 1.1 | −0.9 ± 1.6 | 0.3 ± 1.9 | 0.1 ± 1.4 | 1.0 | 0.4 | |||
| Cerebellar White Matter | 1.2 ± 6.8 | 0.7 ± 6.3 | 3.2 ± 11.8 | −4.9 ± 15.9 | 1.0 | 0.4 | |||
| Cerebellar Cortex | 0.2 ± 1.6 | −1.3 ± 2.3 | −0.4 ± 2.0 | 1.0 ± 2.7 | 1.6 | 0.2 | |||
*
p < 0.05
a
Positive symmetry coefficient indicates left hemisphere volume is larger than right hemisphere volume. Negative value indicates right hemisphere volume is larger.
Abbreviations: NC - normal control; ALN - autism with normal language; ALI - autism with language impairment; SLI - specific language impairment.