언어선택 사이트맵 한국어 영어

P300 detection
After repeatedly presenting multiple stimuli screen in a random order,
it extracts ERP(Event Related Potential) envelope for each stimulus
screen. The peak of amount generated before and after 300ms after
presenting stimuli in extracted ERP envelope is called P300 and the
subject’s selective attention, memory search process, degree of
cognition for the stimulus screen are determined by observing the
amplitude and emergence time of P300 by each stimulus.
Usually, the peak appears between 250ms~600ms after the time of presenting stimulus according to the stimulation presentation protocol and therefore, if appearing too late, it is separately named as late P300 or P600 etc.
Generally, Amplitude and Latency values are used as representative variables for quantifying configuration peaks such as P300. Amplitude means the height or depth of the peak and Latency means the emergence time of the peak.
Previous studies that have been reported over the past 20 years reported that P300 reflects selective attention to stimulus, stimulation cognition, memory search, relief of the sense of uncertainty etc. among information processing processes.
Selective attention (Squires et al., 1975)
Stimulus detection (Hillyard et al., 1971)
Memory scanning (Donchin et al., 1986)
Relief of the sense of uncertainty (Sutton et al., 1965)
That is, as attention, memory, cognitive skills get higher for the stimulus, the amplitude of P300 tends to get bigger and the time when P300 peak appears (Latency) gets faster.
Brain fingerprint analysis program
Items Specifications
Testable items ERP envelope by each presented stimulus, Comparative analysis of amplitude of P300 peak by each stimulus for standard stimulus, Number of positive responses and average response time, Power Spectrum distribution and EEG arousal index
Image Setting Function Presenting at least three or more images created by the user in the program as soon as measuring EEG
Image presenting method Images are presented in the screen in a random order, number of average presentation per 1 image = 60
Stimulate motivation measurement Maintaining time synchronization of data measured in the equipment and the time when predefined images are presented in the screen and
Subject key input If the specified image appears among images presented on the screen, subject key input is marked in the data collection and stored together
Subject key input result
   report screen
Presence or absence of key response, key response time expression in the order of presenting images
Presenting ERP result envelope
   by each image
You can see the ERP envelope graph for each image based on the brain wave data collected by each image and see by selectively overlapping ERP of all images.
Amplitude comparison of ERP Expressing the ERP amplitude of each image into a bar graph at the same time
Basic Operating SW
Items Specifications
Sampling frequency Can be set to 128Hz, 256Hz, 512Hz
Number of channels possible to express envelope 32ch
Envelope display Real-time 32-channel simultaneous display
Data storage function Simultaneous real-time collection of up to 32 channels with hard disk, possible to store for more than 2 hours as soon as displayed.
Display
edit function
If the specified image appears among images presented on the screen, subject key input is marked in data collection part and stored together
Real-time analysis function Notch filter, FFT, multiply, root mean square, average, standard deviation






LXSOL-B31구성품
항번 품목 세부
1 뇌지문분석 프로그램 항번3의 기본운용S/W와 연동되어 작동되며 뇌지문분석솔루션의 핵심기능이 나타남.
2 32채널 전산화뇌파측정기 머리에 총 32개의 전극을 장착가능하며, 컴퓨터와 연결되어 항번3의 프로그램과 연동되어야 기본적인 작동이 가능
3 기본 운용 S/W 항번2의 전산화뇌파측정기를 제어하고 실시간 데이터수집 프로그램
4 장비운용 전산시스템 컴퓨터 및 모니터, 카트로 구성되며, 상기 항번1과 항번3의 S/W가 설치되며,
장치(항번2)와 컴퓨터간에 USB로 연결됨
5 전극류등의 주변품 전극, 페이스트, 일회용전극