Probe for use in measuring a biological signal and biological signal measuring system incorporating the probe

A biological signal measuring system, comprising:

• a probe in which light is emitted onto a predetermined site of an object and the light transmitted through the object is detected;
• a controller for controlling the operation of the probe and for recording and analyzing signals output from the probe;
• a detected light intensity display unit for displaying an intensity of light detected by the probe;
• and
• a biological signal display unit connected to the detected light intensity display unit for displaying a biological signal measured from an object,
• wherein the probe includes:
• a light source unit including a light source that contacts a predetermined site of the object and emits light onto the predetermined site;
• a photodetector unit positioned facing the light source unit for receiving the light emitted from the light source unit and transmitted through the object;
• a body having a space for receiving the object and in which the light source unit and the photodetector unit are positioned in a same optical axis;
• and
• a pressure application unit coupled to the body for applying pressure to the object via the light source unit.