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Ward 2022 findings of heighted sensitivity to conditioned cues and enhanced discrimination learning in Misophonia

In their 2022 study, Ward et al. examined whether misophonia symptoms were associated with overgeneralization, sharpened tuning, or all-or-nothing discrimination during auditory aversive conditioning. Behaviorally, the conditioned stimulus (CS+) elicited more negative and arousing ratings during acquisition, and higher MSS scores were linked to greater overall negative and arousing responses, with no evidence of behavioral overgeneralization. EEG results showed robust parieto-occipital alpha-band suppression to tone onset, with greater CS+-specific alpha reduction during acquisition that was best fit by an all-or-nothing discrimination model. Higher MSS scores were associated with stronger CS+-specific alpha suppression, indicating enhanced neural discrimination rather than generalized responding. The authors concluded that misophonia symptoms are not characterized by overgeneralization but instead reflect heightened sensitivity and increased attentional engagement to conditioned threat cues, with neural evidence supporting enhanced discrimination learning. (Ward et al., 2022)