TY - JOUR
T1 - The Sub-THz Emission of the Human Body under Physiological Stress
AU - Baksheeva, Ksenia A.
AU - Ozhegov, Roman V.
AU - Goltsman, Gregory N.
AU - Kinev, Nickolay V.
AU - Koshelets, Valery P.
AU - Kochnev, Anna
AU - Betzalel, Noa
AU - Puzenko, Alexander
AU - Ishai, Paul Ben
AU - Feldman, Yuri
N1 - Publisher Copyright:
© 2011-2012 IEEE.
PY - 2021/7
Y1 - 2021/7
N2 - We present evidence that in the sub-THz frequency band, human skin can be considered as an electromagnetic bio-metamaterial in which its natural emission is a product of skin tissue geometry and embedded structures. Radiometry was performed on 32 human subjects from 480 to 700 GHz. Concurrently, the subjects were exposed to stress, while heart pulse rate (PS) and galvanic skin response (GSR) were also measured. The results are substantially different from the expected blackbody radiation signal of the skin surface. PS and GSR correlate to the emissivity. Using a simulation model for the skin, we find that the sweat duct is a critical element. The simulated frequency spectra qualitatively match the measured emission spectra and show that our sub-THz emission is modulated by our level of mental stress. This opens avenues for the remote monitoring of the human state.
AB - We present evidence that in the sub-THz frequency band, human skin can be considered as an electromagnetic bio-metamaterial in which its natural emission is a product of skin tissue geometry and embedded structures. Radiometry was performed on 32 human subjects from 480 to 700 GHz. Concurrently, the subjects were exposed to stress, while heart pulse rate (PS) and galvanic skin response (GSR) were also measured. The results are substantially different from the expected blackbody radiation signal of the skin surface. PS and GSR correlate to the emissivity. Using a simulation model for the skin, we find that the sweat duct is a critical element. The simulated frequency spectra qualitatively match the measured emission spectra and show that our sub-THz emission is modulated by our level of mental stress. This opens avenues for the remote monitoring of the human state.
KW - Black body radiation
KW - human skin emission
KW - sub-THz
KW - sweat ducts
UR - http://www.scopus.com/inward/record.url?scp=85103166673&partnerID=8YFLogxK
U2 - 10.1109/tthz.2021.3066099
DO - 10.1109/tthz.2021.3066099
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AN - SCOPUS:85103166673
SN - 2156-342X
VL - 11
SP - 381
EP - 388
JO - IEEE Transactions on Terahertz Science and Technology
JF - IEEE Transactions on Terahertz Science and Technology
IS - 4
M1 - 9380570
ER -