Feature based representations map differently to music perception as a function of nature and duration of training: Evidence based on Mini-PROMS in Indian context

We examined music perception by treating performance on the sub-tests of Profile of Music Perception Skills (Mini-PROMS) as feature-space variables. We investigated pattern relationships using their derived principal component, ‘Music Perception skill’, in line with the construction paradigm to understand how feature-based discrimination defines music perception and is modulated by the nature and duration of musical training (N=82). A heterogeneous group of participants including trained musicians and non-musicians performed Mini-PROMS. The Tempo discrimination threshold was found to be low resulting in a ceiling effect for the entire sample. Musically trained individuals performed better on the tuning sub-test compared to non-musicians. Further, music perception was found to be less informed by recognition of melodic deviations and most informed by deviations in tempo for those with no musical training. However, with short-term training, music perception was most informed by discrimination ability for tuning. For musicians trained in Indian instruments, it was the temporal features whereas for those trained in western instruments, the tonal (melody) features largely contributed to their music perception skill. We also examined the effect of duration and nature of training (training in Indian vs western instruments) highlighting the enculturation of music perception skills for both musically trained and untrained individuals.