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An EEG device and precise wireless event synchronization method

An EEG device and event synchronization technology, applied in electrical components, synchronization devices, medical science, etc., can solve problems such as transmission interface limitations, limited flexibility, and difficulty in implementing multiple stimulation systems, and achieve the effect of wireless synchronization

Active Publication Date: 2016-05-25
NEURACLE TECH CHANGZHOU CO LTD
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AI Technical Summary

Problems solved by technology

[0008] 1. Both are wired transmission schemes, which require wired connection between the stimulator and the EEG acquisition system, which greatly limits the flexibility of experiments and related system development
[0009] 2. The existing scheme is limited by the transmission interface. A group of wired connections for synchronous trigger signals can only transmit one stimulus trigger signal to one EEG acquisition system at a time, which makes it difficult to realize multiple stimulation systems and multiple synchronous acquisitions. Synchronization of parameters with EEG acquisition system

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  • An EEG device and precise wireless event synchronization method
  • An EEG device and precise wireless event synchronization method
  • An EEG device and precise wireless event synchronization method

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Embodiment Construction

[0036] attached figure 1 What is shown is an EEG-related system using a wireless synchronization system according to the present invention, which includes a stimulator, an environmental variable acquisition device, a physiological signal acquisition device, an EEG acquisition device, and the like. In the related system, a synchronous slave clock is added, and the master clock and the slave clock perform a three-way handshake alignment before running. After the operation starts, each system wirelessly transmits the collected data plus the time stamp read from each slave clock to the central processing module, the central processing module performs data alignment according to the time stamp, realizes the synchronization of stimulus events, environmental variables, relevant physiological parameters and EEG data, and then performs data processing to complete the expected function.

[0037] The master clock and slave clock are respectively controlled by an embedded real-time system...

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Abstract

The invention provides a method for precisely synchronizing wireless events of an electroencephalogram device. Synchronous secondary clocks are added in relevant systems, three times of handshake alignment is conducted before operation of a primary clock and the secondary clocks, after operation is started, data collected by each system and timestamp read from each secondary clock are transmitted to a central processing module in a wireless mode, the central processing module conducts data alignment according to the timestamp to achieve synchronization of stimulating events, environment variables and relevant physiological parameters with electroencephalogram data, then data processing can be conducted, and intended functions are achieved.

Description

technical field [0001] The invention relates to a wireless data transmission method, especially a wireless data transmission method capable of precise time synchronization, and a device for realizing the method. Background technique [0002] Event-related evoked potential (ERP) is an electroencephalogram (EEG) induced by a specific stimulus, which can reflect the neurophysiological changes in the cognitive process of the brain under the stimulus, so it is widely used in neuroscience, psychology and other fields. In addition to the essential acousto-optic stimulator and EEG acquisition system, the ERP-based EEG system sometimes needs to combine some other information such as the attached figure 1 Various environmental variables and other physiological signals in the environment to explore new experimental paradigms and develop practical ERP-based EEG devices, such as letter input devices based on visual evoked potentials, environmental controllers based on brain-computer inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/00A61B5/0476
Inventor 胥红来黄肖山
Owner NEURACLE TECH CHANGZHOU CO LTD
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