<p dir="ltr">We welcome the letter from Dr Payne and the additional insights it brings to our first study of the dynamic response of the <i>critical closing pressure</i> (CrCP) and <i>resistance-area product</i> (RAP) of the cerebral circulation at rest (Panerai et al., <a href="https://physoc.onlinelibrary.wiley.com/doi/10.1113/JP288308#tjp16556-bib-0007" target="_blank">2020</a>).</p>