Whether fear causes contraction?

Objections

Objection 1 : It would seem that fear does not cause contraction. For when contraction takes place, the heat and vital spirits are withdrawn inwardly. But accumulation of heat and vital spirits in the interior parts of the body, dilates the heart unto endeavors of daring, as may be seen in those who are angered: while the contrary happens in those who are afraid. Therefore fear does not cause contraction.
Objection 2 : Further, when, as a result of contraction, the vital spirits and heat are accumulated in the interior parts, man cries out, as may be seen in those who are in pain. But those who fear utter nothing: on the contrary they lose their speech. Therefore fear does not cause contraction.
Objection 3 : Further, shame is a kind of fear, as stated above (Question [41], Article [4]). But "those who are ashamed blush," as Cicero (De Quaest. Tusc. iv, 8), and the Philosopher (Ethic. iv, 9) observe. But blushing is an indication, not of contraction, but of the reverse. Therefore contraction is not an effect of fear.