Blunted affect is the scientific term describing a lack of
emotional reactivity (
affect display) on the part of an individual. It is manifest as a failure to express feelings either verbally or non-verbally, especially when talking about issues that would normally be expected to engage the emotions. Expressive gestures are rare and there is little animation in facial expression or vocal inflection.
[1]
Blunt affect 'can be symptomatic of
schizophrenia,
depression, or
brain damage'.
[2] 'The difference between flat and blunted affect is in degree. A person with flat affect has no or nearly no emotional expression. He or she may not react at all to circumstances that usually evoke strong emotions in others. A person with blunted affect, on the other hand, has a significantly reduced intensity in emotional expression'.
[3]
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Years ago, I had a high speed MC accident, in which I suffered some brain trauma. Since then, I have been experiencing muted emotional response. I just now became aware of this "Blunted" effect. I will be discussing this with my doctor.
Is this the type of effect you are referring to?