Poster B26, Sunday, March 26, 8:00 – 10:00 am, Pacific Concourse
Tempo of Self-Selected Happy Music on Posterior to Frontal Theta Asymmetry
Christine Rapadas Jimenez1, Trevor C. J. Jackson1, Mark W. Geisler1; 1San Francisco State University
Music has been used to investigate neural substrates of emotion (Koelsch et al., 2006). Frontal cerebral asymmetries have been studied via electrophysiological brain wave amplitudes in relation to music-evoked valence and approach-related affect (Altenmüller et al., 2002; Daly et al., 2014; Davidson, 1984; Schmidt & Trainor, 2001). Greater posterior compared to frontal theta activity (Pz - Fz) has also been associated with approach affective states derived from emotionally salient tasks (Walden et al., 2015). In the present study, we explored the tempo (beats per minute) of participant’s self-selected music in relation to cortical activation. Posterior to frontal theta (4-8 Hz) asymmetries were found during a music listening task that lasted 45s (theta power was analyzed from a time period of 22-45s [Krumhansl, 1997; Sammler et al., 2007]). Results showed that greater posterior compared to frontal theta activation was associated with faster tempos. Larger posterior to frontal theta ratios for participants (N = 19; 6 male) were associated with faster tempos of self-selected happy song excerpts. For the same participants, posterior to frontal theta ratios were not associated with tempos of self-selected sad song excerpts. Ratios were computed with averaged amplitude values from electrode sites, 100[(P3 + P4) – (F3 + F4)/ (P3 + P4) + (F3 + F4)]. These results corroborate the findings by Walden et al., 2015, such that fast tempo stimuli with positive valence may be associated with approach and reward mechanisms.
Topic Area: EMOTION & SOCIAL: Emotion-cognition interactions