A further consideration in analysing and interpreting facial expressions is the potential for one feature of facial affect to transition very quickly into another in an animated expression. An instance in example (4) expresses both [surprise] and [spirit:up].
From a systemic functional perspective, rather than describing this as a blending or merging of emotions it is considered as the co-instantiation of two different emotions with each realised through particular parts of the face (e.g. eyes, eyebrows, mouth) and often in very quick succession. In (4) the raised curved eyebrows realise [surprise] and the upturned lips realise [spirit:up].
A facial expression of [surprise], interpreted as a perturbance (Martin, 2017a) typically has the briefest duration and often transitions quickly to the expression of another emotion, one which responds to the specific trigger of the perturbance.
Blogger Comments:
[1] From a systemic functional perspective, this blurs the axial distinction between simultaneous systems ('both', 'co-instantiation', 'and') and syntagmatic order ('transition', 'succession'). Moreover, if two emotions can be realised in the same facial expression, the system network needs to be redrawn to represent simultaneous (conjunct) systems. This the authors have not done.
[2] On the one hand, the claim that a facial expression of surprise typically has the briefest duration is an instance of the logical fallacy known as ipse dixit: a bare assertion unsupported by evidence, and is belied by synonyms for 'surprised' such as 'stupefied' and 'dumbfounded'. On the other hand, surprise is the emotion that is the response to what triggered it as a perturbance.
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