fig2
![A multi-channel photoplethysmography array with contact-force regulation for tonoarteriographic imaging](https://image.oaes.cc/ce5b4e8e-a75e-4095-8275-9d063f83aa73/chatmed3011.fig.2.jpg)
Figure 2. Experimental setup and signal visualization. (A) Prototype of the platform; and (A) visualization of the signals from 13 channels.
Figure 2. Experimental setup and signal visualization. (A) Prototype of the platform; and (A) visualization of the signals from 13 channels.
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