Objective To study the effect of electroencephalograph (EEG) bionic electrical stimulation at Wangu (GB12), Tianzhu (BL10), Neiguan (PC6) on cerebral blood flow and metabolism in patients with persistent vegetative state (PVS). Methods 60 patients with PVS were divided into observation group (n=30) and control group (n=30) according to the random number table. The control group received routine treatment, including basic management, hyperbaric oxygen therapy, awaking medicine, sensory stimulation, and so on; while the observation group received EEG bionic electrical stimulation at bilateral Tianzhu, Wangu (cheif electrodes) and Neiguan (auxiliary electrodes) in addition. They were treated for 30 days. They were assessed with the PVS score, and observed with transcranial Doppler ultrasound (TCD) and magnetic resonance spectroscopy (MRS) one day before and one day after treatment. Results The incidence of improvement was 86.67% in the observation group, more than 60.00% in the control group (P<0.05). The difference of blood flow velocity before and after treatment (ΔVm) of anterior-middle cerebral artery was more in the observation group than in the control group respectively (P< 0.001), as well as those of posterior cerebral-vertebral-basilar artery (P<0.01). The N-acetyl aspartic acid/creatine (NAA/Cr) increased more in the observation group than in the control group respectively (P<0.01), and the choline/creatine (Cho/Cr) decreased more (P<0.01), after treatment. Conclusion EEG bionic electrical stimulation can improve the cerebral circulation and metabolism in patients with PVS, which may associate with the wake promoting.

Objective To investigate the impact flat deformity of the cerebral cortex induced by congenital hydrocephalus on motor functioning and cognition.Methods Tomography was used to confirm the presence of flat cortex deformity in three congenital hydrocephalus patients ranging in age from 20 to 33.Their motor control,balance,cognition and ability in the activities of daily living (ADL) were evaluated using the Fugl-Meyer assessment (FMA),the Berg balance scale (BBS),the mini-mental state examination (MMSE) and the modified Barthel index (MBI).Speech dysfunction was judged on the basis of clinical communication.The patients were scanned using a 64-slice spiral CT and size-of-ventricle indices were calculated.Results All 3 patients underwent ventrideperitoneal shunt.Their FMA scores were 75.5,83 and 100,with BBS scores of 4,24 and 56,MMSE scores of 14,23 and 26,and the MBIs of 40,90 and 100.CT images showed obvious ventricle enlargement and a thinner cortex layer in all three,with the thinnest part 0.18 cm,0.22 cm and 0.57 cm.Their ventricle indexes were 303％,288％ and 192％,respectively.Conclusion Although there is no systematic rehabilitation therapy for such patients,their motor,cognition and speech functioning were good,indicating the great potential for plasticity of the human brain.