Dissociating the processing of operatic and natural vocal sounds through interference effects on working memory

05/08/2026

AI Summary

Operatic and natural singing styles were represented differently in working memory when comparing short melodies sung with vibrato versus straight voice.
Distractor interference varied by distractor type; for operatic targets, congruent operatic distractors improved working memory compared with incongruent natural distractors (P=0.0043).
Findings suggest partially separate neural resources maintain operatic and natural voices in singers' working memory, regardless of prior opera training.

AI Summary

METHODS: We addressed this question by investigating the representation of short melodies sung in two distinct styles - a full operatic voice with vibrato (operatic style) and a straight voice without vibrato (natural style) - in working memory (WM) of professionally trained opera singers and amateur choir singers, using a distractor interference paradigm.

WM performance for operatic voices was significantly higher in the case of congruent, operatic voice distractor stimuli as compared to incongruent, natural voice distractor stimuli (P=0.0043).

CONCLUSION: Our findings that operatic and natural voice distractors have differential effects on WM performance of both opera and choir singers for operatic voices imply that partially separate neural resources might be involved in maintaining natural and operatic voices in singers' WM, independent of any prior opera singing training.

Basic summary

Ideggyogy Sz. 2026 Jul 27;79(7-8):266-273. doi: 10.18071/isz.79.0266.

ABSTRACT

BACKGROUND AND PURPOSE: Mastering the operatic voice requires many years of intensive training and leads to a widespread, global impact on the structural and functional organization of the human brain. However, whether training and experience in producing operatic style singing develops differential neural representation for operatic and natural voices in opera singers remains unexplored.

METHODS: We addressed this question by investigating the representation of short melodies sung in two distinct styles – a full operatic voice with vibrato (operatic style) and a straight voice without vibrato (natural style) – in working memory (WM) of professionally trained opera singers and amateur choir singers, using a distractor interference paradigm.

RESULTS: The results revealed that distractor effects on WM performance for operatic, but not for natural voices significantly differed depending on the type of delay distractors (P=0.0011). WM performance for operatic voices was significantly higher in the case of congruent, operatic voice distractor stimuli as compared to incongruent, natural voice distractor stimuli (P=0.0043).

CONCLUSION: Our findings that operatic and natural voice distractors have differential effects on WM performance of both opera and choir singers for operatic voices imply that partially separate neural resources might be involved in maintaining natural and operatic voices in singers’ WM, independent of any prior opera singing training.

PMID:42554327 | DOI:10.18071/isz.79.0266

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