Songoffireandice t1_j8eor67 wrote on February 13, 2023 at 7:31 PM

Reply to comment by NaturalisticDualism in The brain can rapidly detect and process fearful faces that are otherwise invisible to the eye. There appears to be a neural pathway for detection of fear, which operates automatically, outside of conscious awareness. by Wagamaga

Going to hard disagree for a second, but I'm not paying $35 to review the study so please provide more information on those studied.

Those with borderline personality disorder would be populations I would be interested in seeing the commonalities, as it's already well prove that micro expression mind reading is a prevalent trait in these subsets.

If this is similar to how we learn to stop hearing dialect sound patterns for instance, then there is a strong case for this being a trained perception, particularly in cases of childhood trauma before your brain start trimming out excess information.

Also, neurodivergent is a stupid term to begin with, who the heck is neurotypical? It's best measured in degrees, if that. Even the most average person across all metrics is exceptionally unique in their normative tendencies I'd posit.

NaturalisticDualism t1_j8ewd9h wrote on February 13, 2023 at 8:21 PM

I'm not sure. The study is on epileptics. I'm going to say the language faculty and the amygdala are quite different from my (limited) phonological representations in some models are entirely learned with few or no primitives and the pruning you speak of.

However, Neonates already have some facial recognition software. My understanding in terms of innate structure leads me to hypothesize some deep homology in primates here and appearing early in development.

It's well known that the amygdala can be effected my ACEs, I don't know and would rather not guess. But a nonconscious 100 millisecond process might be hard to retrain. Im doing a bunch of guesswork. Nevertheless what you say is interesting and food for thought. I'm pretty unsure.

Songoffireandice t1_j8gs2x6 wrote on February 14, 2023 at 4:37 AM

I intended to mean it was a similar mechanism in the broader sense that reducing unnecessary sensory stimulation is likely advantageous, using a specific example I was certain of as a token reference in the case of auditory development.

Retraining may not even be a good idea, as I can say with first hand experience being hyper-reactive to subtle emotional visual cues doe's not make functioning in society generally any easier. It does make you potentially better at reading people you are familiar with though.

I like your angle as a vestigial function, and after finding the study posted I think it's better supported than my speculation. What really interests me is the specificity, especially in the lack of reaction to happiness, but not entirely unexpected. Happiness, sadness, anger, disgust, contempt, fear, and surprise are all universal to our expressions. With that being said, I would like to at least have seen anger tested in addition, as we currently attribute the amygdala to processing fear and anger specifically.