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Formal music education alters perceived musicality of pitch sequences Mrinmayi Kulkarni 1 , Katherine Potkonjak 1 , Richard Randall 2 , Adam S. Greenberg 1 1 Department of Psychology, University of Wisconsin-Milwaukee, 2 School of Music, Carnegie Mellon University Introduc)on • Perceived “musicality” is affected by changes in lowlevel auditory features of pitched sequences 1,2 • Music experBse has been shown to affect a wide range of perceptual and cogniBve abiliBes 3 • What effect does formal music training have on the percep)on of auditory objects (e.g. musicality ra)ngs)? Methods • SBmuli: 100 randomly generated puretone sequences of notes • Music training survey: • 12 quesBons (Eg: “Do you have absolute pitch?”) • ParBcipants divided into 3 groups: Low, Medium and High • 27 ParBcipants (10 Low, 9 Medium, 8 High) • Task: Rate each melody on a scale of 15 (1 Not Musical; 5 Very Musical) • Structural Metrics of melodies Analysis and Results Difference Scores Absolute difference in mean zscored raBngs (yaxis) for each melody (xaxis). Principal Components Analysis (PCA) CorrelaBng Eigenvalues with training scores. Each point represents one parBcipant. Colours depict amount of music training. Comparing Medium and High groups PCA Each point represents one melody. Colours depict mean zscored raBng. PCA Each point represents one melody. Colours depict mean zscored raBng. Conclusions • Subset of melodies may be diagnosBc for musical experBse • Even a small amount of music training changes the percepBon of auditory objects • The Medium and High groups use a different strategy in making judgments about musicality Music exper+se may alter the percep+on of auditory objects by changing the salience of lowlevel features of sound References 1.Greenberg, A.S., Randall, R. (October, 2015).The role of auditory cortex in midlevel audiBon. Society for Neuroscience Nanosymposium 2.Potkonjak, K., Greenberg, A. S. (April, 2015) The Effects of Musical Training on Perceived Auditory Object Musicality. UW System Research Symposium 3.Carey D, et al. (2015). Generality and specificity in the effects of musical experBse on percepBon and cogniBon. Cogni8on. 137:81105. Acknowledgements This research was supported by the USIsrael BinaBonal Science FoundaBon grant No. 2013400 (A.S.G) and Rothberg Research Award in Human Brain Imaging (R.R.). Training Compon ent 1 Compon ent 2 r= 0.4 4, p < 0.05 r= 0.17 ,p= n.s. CorrelaBng Mean RaBngs between groups. High Medium Low r = 0.75, p < 0.001 r = 0.57, p <0.001 r = 0.59, p < 0.001 CorrelaBng Eigenvalues between groups. High Medium Low r = 0.79, p< 0.001 r = 0.62, p <0.001 r = 0.65, p< 0.001 Correla)on of Eigenvalues with Structural Metrics [email protected] SNAP Laboratory.com Sensory Neuroscience ● Attention ● Perception Group High Medium Low Range (0.45) Range (0.42) Range (0.44) Range (0.27) Entropy (0.57) Entropy (0.51) Entropy (0.53) Entropy (0.46) Interval (0.05) Interval (0.05) Interval (0.10) Interval (0.01) Variance (0.53) Variance (0.49) Variance (0.49) Variance (0.46) Mean (0.58)Mean (0.42)Mean (0.64)Mean (0.45) Entropy (0.14) Entropy (0.13) Entropy (0.15) Entropy (0.03) Key (0.12) Key (0.20) Key (0.08) Key (0.05) rvalues in parentheses. Yellow cells (p<0.05).
