A UCSD study published in Neuroreport (Vol. 10, No. 18) in December 1999 found that participants performed worse on an arithmetic working-memory task after 35 hours of sleep deprivation than after a normal night's sleep.
Notes on verification
Confirmed via PubMed citation and publisher abstract matching journal, volume, issue, date, methodology, and findings; consistent with follow-up papers specifying 35-hour sleep deprivation period.
Sources
- How does the brain catch up? - American Psychological Association (apa.org)
- https://pubmed.ncbi.nlm.nih.gov/10635071/ (pubmed.ncbi.nlm.nih.gov)
- https://journals.lww.com/neuroreport/abstract/1999/12160/prefrontal_and_parietal_cortex_activation.4.aspx (journals.lww.com)