ABSTRACT
@#The present study discussed functional reorganization and alteration in respond to the slow-growing tumour,hemangiopericytoma in the occipital cortex. Visual evoked field (VEF) and auditory evoked field (AEF) usingmagnetoencephalography (MEG) was used to evaluate the source localization and brain activity. Results of VEF sourcelocalization show a typical brain waves. Brain activity of the occipital lobe demonstrate low activation in the ipsilateralto the tumour. However, result shows the activation on the contralateral hemisphere was high and bigger in activationvolume. AEF result shows an identical source localization and both side of the temporal lobe are activated. This resultsuggests that there is a positive plasticity in auditory cortex and slow-growing tumour can induce functional reorganizationand alteration to the brain.
ABSTRACT
Panic disorder (PD) is characterized by recurrent unexpected panic attacks and fear of dying or losing control, which negatively influences the social functioning and life quality of the patients. The neurobiological mechanisms underlying PD have not been clearly understood. Previous opinion held that hyperactivity of the fear network which included amygdala, hypothalamus, hippocampus, brain stem and so on and dysfunction of prefrontal cortex underlay PD. Summarizing recent advances on magnetic resonance imaging studies in PD, this review focuses on the functional, structural and metabolic neuroanatomical alterations in the specific population. There is evidence to show that the hyperactivity of fear network, prefrontal and occipital cortex may be involved in the pathophysiology of PD and it is necessary to revise models of anxiety disorder.
ABSTRACT
Panic disorder (PD) is characterized by recurrent unexpected panic attacks and fear of dying or losing control,which negatively influences the social functioning and life quality of the patients.The neurobiological mechanisms underlying PD have not been clearly understood.Previous opinion held that hyperactivity of the fear network which included amygdala,hypothalamus,hippocampus,brain stem and so on and dysfunction of prefrontal cortex underlay PD.Summarizing recent advances on magnetic resonance imaging studies in PD,this review focuses on the functional,structural and metabolic neuroanatomical alterations in the specific population.There is evidence to show that the hyperactivity of fear network,prefrontal and occipital cortex may be involved in the pathophysiology of PD and it is necessary to revise models of anxiety disorder.
ABSTRACT
Five male and one female patients with IPVS caused by infarction of occipital cortex and optic radiations of brain were reported. The ages were in the range from 21 to 69 years. The evidence of diagnosis included sudden loss of visual acuity in both eyes, normal fundus, homonymous defect of visual field, infarction of brain in CT scan, without other positive signs of central nervous system or headache or eye pain before or at the time of attack. All the patients were treated by injection of Co- Anisodine Ⅰ and Ⅱ at acupuncture points with satisfactory effects. The therapy is safe, effective, and reliable. The clinical features and the treatment mechanism were disscused.