Functional neuroimaging and behavioral correlates of capacity decline in visual short-term memory after sleep deprivation
- 29 May 2007
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 104 (22), 9487-9492
- https://doi.org/10.1073/pnas.0610712104
Abstract
Sleep deprivation (SD) impairs short-term memory, but it is unclear whether this is because of reduced storage capacity or processes contributing to appropriate information encoding. We evaluated 30 individuals twice, once after a night of normal sleep and again after 24 h of SD. In each session, we evaluated visual memory capacity by presenting arrays of one to eight colored squares. Additionally, we measured cortical responses to varying visual array sizes without engaging memory. The magnitude of intraparietal sulcus activation and memory capacity after normal sleep were highly correlated. SD elicited a pattern of activation in both tasks, indicating that deficits in visual processing and visual attention accompany and could account for loss of short-term memory capacity. Additionally, a comparison between better and poorer performers showed that preservation of precuneus and temporoparietal junction deactivation with increasing memory load corresponds to less performance decline when one is sleep-deprived.Keywords
This publication has 74 references indexed in Scilit:
- Starch Granule Initiation inArabidopsisRequires the Presence of Either Class IV or Class III Starch SynthasesPlant Cell, 2009
- STARCH-EXCESS4 Is a Laforin-Like Phosphoglucan Phosphatase Required for Starch Degradation in Arabidopsis thalianaPlant Cell, 2009
- Overriding the co‐limiting import of carbon and energy into tuber amyloplasts increases the starch content and yield of transgenic potato plantsPlant Biotechnology Journal, 2008
- Primer3Plus, an enhanced web interface to Primer3Nucleic Acids Research, 2007
- Circadian Clock Regulation of Starch Metabolism Establishes GBSSI as a Major Contributor to Amylopectin Synthesis in Chlamydomonas reinhardtiiPlant Physiology, 2006
- Distinct Capacity Limits for Attention and Working MemoryPsychological Science, 2006
- Sugars and Circadian Regulation Make Major Contributions to the Global Regulation of Diurnal Gene Expression in ArabidopsisPlant Cell, 2005
- Light, the circadian clock, and sugar perception in the control of lignin biosynthesisJournal of Experimental Botany, 2005
- Expression of the Granule-Bound Starch Synthase I (Waxy) Gene from Snapdragon Is Developmentally and Circadian Clock Regulated1Plant Physiology, 1999
- Companion cell‐specific inhibition of the potato sucrose transporter SUT1Plant, Cell & Environment, 1996