The caption to Figure 1 in the above publication (Brentari et al. Reference Brentari, Ergin, Senghas, Cho, Owens and Coppola2021) should have included the following sentence: ‘The four ASL images are reproduced with permission from Valli (Reference Valli2006).’ The full reference should also have appeared in the bibliography.
The authors apologise for the omission.