Are expression aftereffects fully explained by tilt adaptation?

Swe, Derek C.; Burton, Jason; Rhodes, Gillian

doi:10.1167/19.14.21

Cited by 4 publications

(2 citation statements)

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“…Furthermore, the insula, as part of the salience network, is important for the rapid detection of personally relevant or otherwise significant emotional cues in the environment [ 75 , 76 , 77 ]. Our findings showing the involvement of brain regions subserving emotional processing are consistent with previous findings that emotional adaptation aftereffects were associated with high-level emotional processing [ 22 , 30 , 31 , 54 , 78 ] and that the magnitude of emotional adaptation aftereffects was positively correlated with the emotional intensity of the adapting faces [ 19 , 27 , 30 , 79 ].…”

Section: Discussionsupporting

confidence: 92%

“…The key assignment was counterbalanced among participants throughout the experiment. Participants were instructed to fixate on a white cross in the center of the black screen to eliminate the effects of fixation differences [ 30 , 54 ]. For each trial, the response time was a random jitter (i.e., fixation) lasting between 2.3 and 5.3 s (mean = 4.3 s) to enhance the design efficiency [ 55 ].…”

Section: Methodsmentioning

confidence: 99%

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The Left Amygdala and Right Frontoparietal Cortex Support Emotional Adaptation Aftereffects

Su,

Fu,

et al. 2024

Brain Sciences

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Adaptation aftereffects—in which prolonged prior experience (adaptation) can bias the subsequent judgment of ambiguous stimuli—are a ubiquitous phenomenon. Numerous studies have found behaviorally stable adaptation aftereffects in a variety of areas. However, it is unclear which brain regions are responsible for this function, particularly in the case of high-level emotional adaptation aftereffects. To address this question, the present study used fMRI technology to investigate the neural mechanism of emotional adaptation aftereffects. Consistent with previous studies, we observed typical emotional adaptation effects in behavior. Specifically, for the same morphed facial images, participants perceived increased sadness after adapting to a happy facial image and increased happiness after adapting to a sad facial image. More crucially, by contrasting neural responses to ambiguous morphed facial images (i.e., facial images of intermediate morph levels) following adaptation to happy and sad expressions, we demonstrated a neural mechanism of emotional aftereffects supported by the left amygdala/insula, right angular gyrus, and right inferior frontal gyrus. These results suggest that the aftereffects of emotional adaptation are supported not only by brain regions subserving emotional processing but also by those subserving cognitive control.

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