Antti Ahonen,Matti Kajola,Jukka Nenonen,Juha Simola,Samu Taulu
申请号：
US11654029
公开号：
US08838225B2
申请日:
2007.01.17
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The present invention introduces a method for processing multichannel measurement data achieved especially in MEG and EEG measurements. The method uses a signal space separation (SSS) method and the orthogonality of lead fields in order to calculate linear transformation from physical measurement channels to virtual channels. The geometry related to the measurement arrangement is dissipated and the number of virtual channels is clearly lower than the number of physical sensors. The concept of total information can be applied for such transformed measurement data due to orthogonality. The method offers simplified post-processing of the biomagnetic data, such as for source modelling. The total information can also be interpreted as a robust quantity describing the physiological state of a patient.
