Research on Perfect Pitch

Perfect pitch reconsidered
This review suggests that perfect pitch (AP) likely has a genetic predisposition, requires early musical training, and may interfere with relative pitch perception. It also questions the overall value of AP for musicians.
https://pubmed.ncbi.nlm.nih.gov/25301913/

Absolute pitch and planum temporale
This study explores the neural basis of absolute pitch (AP) and relative pitch (RP) processing. It suggests that AP might be a deviation from the typical development of RP ability.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2638817/

Critical periods for absolute pitch acquisition: A twin-study
This study challenges the critical period theory of AP acquisition by demonstrating that some adults with high auditory working memory can learn AP through intensive training.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6759182/

Neural representations of pitch in absolute and relative pitch possessors
This study uses EEG to investigate the neural representations of AP and RP in musicians. It finds that AP musicians have a higher representational similarity between listening and labeling pitches compared to RP musicians.
https://pubmed.ncbi.nlm.nih.gov/31238164/

Video Essays on Perfect Pitch