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. 2022 Jun 19;22(12):4633. doi: 10.3390/s22124633

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Each traditional upper landmark has a similar location to one another across the different emotions of a person; $N e u t r a l_{1, 17, 18, \dots, 29} ≅ F e a r_{1, 17, 18, \dots, 29} ≅ S u r p r i s e_{1, 17, 18, \dots, 29} ≅ S a d_{1, 17, 18, \dots, 29} ≅ A n g e r_{1, 17, 18, \dots, 29} ≅ D i s g u s t_{1, 17, 18, \dots, 29} ≅ H a p p i n e s s_{1, 17, 18, \dots, 29} ≅ C o n t e m p t_{1, 17, 18, \dots, 29}$ .