TY - JOUR
T1 - Task-related dissociation of EEG β enhancement and suppression
AU - Woodruff, C. Chad
AU - Barbera, Dylan
AU - Von Oepen, Rebecca
N1 - Funding Information:
This research was supported in part by National Science Foundation grant # 1263396 .
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Previous investigations of EEG β processes can be divided into two categories: one in which β enhancement is obtained and one in which β suppression is obtained. The current study investigated the β band range (14-30. Hz) by subdividing the signal into 2. Hz sub-bands. We presented participants with photographs of faces expressing happy, angry, sad or neutral expressions under two primary tasks in which participants judged the emotion the individual was expressing, or how the way the other person feels makes the participant feel. Results revealed a pattern of both β suppression and enhancement that appeared to depend on whether the task required first-person emotional experience (self-task) or perspective-taking (other-task). Specifically, the self-task was associated with enhancement while the other-task was associated with suppression. While some previous research has reported β enhancement to emotion-inducing stimuli, other research has reported β suppression in tasks also associated with mu suppression. To our knowledge, the current data are the first to reveal both β enhancement and suppression within a single experiment and suggests a neurocognitive dissociation of enhancement and suppression within the β band range.
AB - Previous investigations of EEG β processes can be divided into two categories: one in which β enhancement is obtained and one in which β suppression is obtained. The current study investigated the β band range (14-30. Hz) by subdividing the signal into 2. Hz sub-bands. We presented participants with photographs of faces expressing happy, angry, sad or neutral expressions under two primary tasks in which participants judged the emotion the individual was expressing, or how the way the other person feels makes the participant feel. Results revealed a pattern of both β suppression and enhancement that appeared to depend on whether the task required first-person emotional experience (self-task) or perspective-taking (other-task). Specifically, the self-task was associated with enhancement while the other-task was associated with suppression. While some previous research has reported β enhancement to emotion-inducing stimuli, other research has reported β suppression in tasks also associated with mu suppression. To our knowledge, the current data are the first to reveal both β enhancement and suppression within a single experiment and suggests a neurocognitive dissociation of enhancement and suppression within the β band range.
KW - Emotional processing
KW - Empathy
KW - Self/other discrimination
KW - β enhancement/suppression
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U2 - 10.1016/j.ijpsycho.2015.11.005
DO - 10.1016/j.ijpsycho.2015.11.005
M3 - Article
C2 - 26593747
AN - SCOPUS:84949920903
SN - 0167-8760
VL - 99
SP - 18
EP - 23
JO - International Journal of Psychophysiology
JF - International Journal of Psychophysiology
ER -