Table 2.

Effect of aging on the thickness (µm) of the different layers of the cerebellar cortex in the different groups.

Thickness	Adult Mean (µm) ± SD	Early senile Mean (µm) ± SD	Late senile Mean (µm) ± SD	P value
Whole thickness	3316.77 ± 187.53	2395.8 ± 35.79	1400.43 ± 210.2	Early senile versus adult p < 0.001** Late senile versus adult p < 0.001 ** Late senile versus early senile p < 0.001**
Molecular layer	2395.60 ± 35.79	1643.74 ± 82.22	807.75 ± 46.009	Early senile versus adult p < 0.001** Late senile versus adult p < 0.001 ** Late senile versus early senile p < 0.001**
Granular layer	144.04 ± 54.90	257.20 ± 24.24	994.78 ± 82.27	Early senile versus adult p = 0.012# Late senile versus adult p < 0.001 ** Late senile versus early senile p < 0.001**
Purkinjie layer	251.36 ± 32.14	219.36 ± 5.71	105.18 ± 0.3.99	Early senile versus adult p = 0.027# Late senile versus adult p < 0.001** Late senile versus early senile p < 0.001**

SD: standered deviation; NS: Non significant (p > 0.05); ^#statistically significant (p ≤ 0.05); **highly significant (p ≤ 0.001).