The present invention relates to an apparatus for measuring a disorder part by using a cortical-function brain network and a method thereof. According to the present invention, The apparatus comprises: a receiver for receiving an electroencephalogram signal measured from a plurality of nodes closely contacting the scalp of a subject in a resting state; a control unit which calculates a brain network value for the degree and strength of the connection between interconnected nodes by using the received electroencephalogram signal, and applies a false discovery rate (FDR) method to the calculated brain network value to obtain a significant difference value of each node for a frequency band; and a brain network analysis unit which acquires node information corresponding to the disorder part of the brain according to the significant difference value of each node and classifies the degree of seriousness of a major depressive disorder (MDD) according to the number of nodes corresponding to the acquired disorder part. The apparatus can calculate a network value by using brain waves measured in each of a plurality of frequency bands, and can detect a part where an abnormal reaction has occurred by using the calculated network value, thereby enabling understanding the brain mechanism of all mental illnesses including the MDD.
Measurement apparatus of altered cortical region usingfunctional network and method thereof