1 Tissue, Total RNA, Human Disease, Alzheimer's Disease, Precentral Gyrus.

2 Reconstruction of bilateral CST in the control group, precentral gyrus to internal capsule and continued to pontine and medulla oblongata, and concordance was good in each.

3 Inhibited areas: bilaterally in upper middle precentral gyrus and postcentral gyrus, superior parietal lobule, inferior parietal lobule and prefrontal cortex.

4 The locations of the DCES were concordant with those of the precentral gyrus judged by the CSEP in 33 cases, and CSEP was atypical but DCES positive in 5 cases.

5 MRI of the brain confirmed the presence of a lesion of the right precentral gyrus.