Group: Head orientation
Orientation is coded using an external element in the frame of reference, namely that of the interlocutor (the person addressed in the communication). So the body part is coded as either facing the interlocutor, or faced away from the interlocutor. Orientation is coded continuously and is body part specific.
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Facing
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The face is oriented towards the interlocutor. The head is faced towards the interlocutor as long as the full face is visible from that point of view. Head orientation is coded independently from gaze orientation.
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Averted
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The face is oriented away from the interlocutor. The head is averted from the interlocutor as soon as parts of the face are not visible from that point of view i.e. when the head is turned laterally or tilted vertically. Head orientation is coded independently from gaze orientation.
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