ABSTRACT
This paper introduces a data acquisition circuit that is able to acquire ventricular late potentials and standard 12-lead electrocardiogram signals. This circuit adopts time interruption acquisition, it has the characteristics of programmed gain, isolated ground, low-noise, high-CMRR, collecting data for a long time.
Subject(s)
Electrocardiography/instrumentation , Electronics , Signal Processing, Computer-Assisted/instrumentation , Ventricular Function , Equipment Design , Humans , Software DesignABSTRACT
PURPOSE: To evaluate the efficacy of levodpa treatment for amblyopia. METHODS: The patients with amblyopin were given a single dose of levodopa, and the normal control group was established with the other normal eye in unilateral amblyopia. Their pattern visual evoked potential(PVEP) were tested before and after taking levodopa. RESULTS: After taking a single dose of levodopa, the PVEP in the normal eyes showed that the N1P1 amplitudes evoked by middle spatial frequency stimuli and the P1N2 amplitudes evoked by high spatial frequency stimuli increased, however, in the amblyopic eyes showed that the N1 latency evoked by low spatial frequency stimuli and P1 latency evoked by middle spatial frequency decreased. CONCLUSION: A single dose of levodopa administration can induce improvement of PVEP in the amblyopic eyes, and levodopa may be efficacious in the amblyopic therapy.
