The restorative effect of naps on perceptual deterioration

Abstract

Human performance on visual texture discrimination tasks improves slowly (over days) in the absence of additional training. This 'slow learning' requires nocturnal sleep after training and is limited to the region of visual space in which training occurred. Here, we tested human subjects four times in one day and found that with repeated, within-day testing, perceptual thresholds actually increased progressively across the four test sessions. This performance deterioration was prevented either by shifting the target stimuli to an untrained region of visual space or by having the subjects take a mid-day nap between the second and third sessions.

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Figure 1: Beneficial effect of napping.
Figure 2: Comparison of test-day and baseline long naps.
Figure 3: Beneficial effect of shifting stimulus location.

References

  1. 1

    Takahashi, M. & Arito, H. Maintenance of alertness and performance by a brief nap after lunch under prior sleep deficit. Sleep 23, 813–819 (2000).

    CAS  Article  PubMed  Google Scholar 

  2. 2

    Dinges, D.F. & Broughton, R.J. (eds.) Sleep and Alertness: Chronobiological, Behavioral and Medical Aspects of Napping (Raven, New York, 1989).

    Google Scholar 

  3. 3

    Bonnet, M.H. & Arand, D.L. Impact of naps and caffeine on extended nocturnal performance. Physiol. Behav. 56, 103–109 (1994).

    CAS  Article  PubMed  Google Scholar 

  4. 4

    Bonnet, M.H. The effect of varying prophylactic naps on performance, alertness and mood throughout a 52-hour continuous operation. Sleep 14, 307–315 (1991).

    CAS  Article  PubMed  Google Scholar 

  5. 5

    Rosa, R.R. Napping at home and alertness on the job in rotating shift workers. Sleep 16, 727–735 (1993).

    CAS  Article  Google Scholar 

  6. 6

    Horne, J.A. & Reyner, L.A. Counteracting driver sleepiness: effects of napping, caffeine, and placebo. Psychophysiology 33, 306–309 (1996).

    CAS  Article  PubMed  Google Scholar 

  7. 7

    Harma, M., Knauth, P. & Ilmarinen, J. Daytime napping and its effects on alertness and short-term memory performance in shiftworkers. Int. Arch. Occupational Environ. Health 61, 341–345 (1989).

    CAS  Article  Google Scholar 

  8. 8

    Taub, J.M. Effects of habitual variations in napping on psychomotor performance, memory and subjective states. Int. J. Neurosci. 9, 97–112 (1979).

    CAS  Article  Google Scholar 

  9. 9

    Gais, S., Plihal, W., Wagner, U. & Born, J. Early sleep triggers memory for early visual discrimination skills. Nat. Neurosci. 3, 1335–1339 (2000).

    CAS  Article  PubMed  Google Scholar 

  10. 10

    Plihal, W. & Born, J. Effects of early and late nocturnal sleep on priming and spatial memory. Psychophysiology 36, 571–582 (1999).

    CAS  Article  Google Scholar 

  11. 11

    Smith, C. Sleep states and memory processes. Behav. Brain Res. 69, 137–145 (1995).

    CAS  Article  PubMed  Google Scholar 

  12. 12

    Smith, C.T., Conway, J.M. & Rose, G.M. Brief paradoxical sleep deprivation impairs reference, but not working, memory in the radial arm maze task. Neurobiol. Learn. Mem. 69, 211–217 (1998).

    CAS  Article  PubMed  Google Scholar 

  13. 13

    Stickgold, R. Sleep: off-line memory reprocessing. Trends Cogn. Sci. 2, 484–492 (1998).

    CAS  Article  Google Scholar 

  14. 14

    Stickgold, R., Whidbee, D., Schirmer, B., Patel, V. & Hobson, J.A. Visual discrimination task improvement: a multi-step process occurring during sleep. J. Cogn. Neurosci. 12, 246–254 (2000).

    CAS  Article  Google Scholar 

  15. 15

    Stickgold, R., James, L. & Hobson, J.A. Visual discrimination learning requires post-training sleep. Nat. Neurosci. 2, 1237–1238 (2000).

    Article  Google Scholar 

  16. 16

    Karni, A. & Sagi, D. The time course of learning a visual skill. Nature 365, 250–252 (1993).

    CAS  Article  Google Scholar 

  17. 17

    Fahle, M. Human pattern recognition: parallel processing and perceptual learning. Perception 23, 411–427 (1994).

    CAS  Article  PubMed  Google Scholar 

  18. 18

    Fahle, M. & Edelman, S. Long-term learning in vernier acuity: effects of stimulus orientation, range and of feedback. Vision Res. 33, 397–412 (1993).

    CAS  Article  PubMed  Google Scholar 

  19. 19

    Karni, A. & Sagi, D. Where practice makes perfect in texture discrimination: evidence for primary visual cortex plasticity. Proc. Natl. Acad. Sci. USA 88, 4966–4970 (1991).

    CAS  Article  PubMed  Google Scholar 

  20. 20

    Plihal, W. & Born, J. Effects of early and late nocturnal sleep on declarative and procedural memory. J. Cogn. Neurosci. 9, 534–547 (1997).

    CAS  Article  PubMed  Google Scholar 

  21. 21

    Stickgold, R., Schirmer, B., Patel, V., Whidbee, D. & Hobson, J.A. Visual discrimination learning: both NREM and REM are required. Sleep 21 (Suppl.), 256 (1998).

  22. 22

    Karni, A., Tanne, D., Rubenstein, B.S., Askenasy, J.J.M. & Sagi, D. Dependence on REM sleep of overnight improvement of a perceptual skill. Science 265, 679–682 (1994).

    CAS  Google Scholar 

  23. 23

    Contreras, D., Destexhe, A. & Steriade, M. Intracellular and computational characterization of the intracortical inhibitory control of synchronized thalamic inputs in vivo. J. Neurophysiol. 78, 335–350 (1997).

    CAS  Article  Google Scholar 

  24. 24

    Destexhe, A., Contreras, D. & Steriade, M. Spatiotemporal analysis of local field potentials and unit discharges in cat cerebral cortex during natural wake and sleep states. J. Neurosci. 19, 4595–4608 (1999).

    CAS  Article  Google Scholar 

  25. 25

    Sejnowski, T.J. & Destexhe, A. Why do we sleep? Brain Res. 886 (Suppl.) 208–223 (2000).

    CAS  Article  PubMed  Google Scholar 

  26. 26

    Smith, C. & Rose, G.M. Evidence for a paradoxical sleep window for place learning in the Morris water maze. Physiol. Behav. 59, 93–97 (1996).

    CAS  Article  Google Scholar 

  27. 27

    Bettina, B.L., Levi, D.M. & Reich, L.N. Vision Res. 34, 1679–1690 (1995).

    Google Scholar 

  28. 28

    Ball, K. & Sekuler, R. Direction-specific improvement in motion discrimination. Vision Res. 27, 953–963 (1987).

    CAS  Article  Google Scholar 

  29. 29

    Watanabe, T., Nanez, J.E. & Saksaki, Y. Perceptual learning without perception. Nature 413, 844–848 (2001).

    CAS  Article  Google Scholar 

  30. 30

    Karni, A., Weisberg, J., Lalonde, F. & Ungerleider, L.G. Slow changes in primary and secondary visual cortex associated with perceptual skill learning: an fMRI study. Neuroimage 3 (Suppl.), S543 (1995).

    Google Scholar 

  31. 31

    Rechtschaffen, A. & Kales, A. A Manual of Standardized Terminology, Techniques and Scoring System for Sleep Stages of Human Subjects (Brain Information Service, University of California, Los Angeles, 1968).

    Google Scholar 

  32. 32

    Cantero, J.L., Atienza, M., Hobson, J.A. & Stickgold, R. Nightcap: a reliable home monitor for detecting normal sleep onset. Sleep 25, 238–245 (2002).

    Article  Google Scholar 

  33. 33

    Hoddes, E., Zarcone, V., Smythe, H., Phillips, R. & Dement, W.C. Quantification of sleepiness: a new approach. Psychophysiology 10, 431–436 (1973).

    CAS  Article  PubMed  Google Scholar 

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Acknowledgements

This research was supported by grants from the National Institutes of Health (MH 48,832 and NS 26,985) and AFOSR (83-0320) and by fellowships to J.L.C. and M.A. from the Spanish Ministry of Education and the NATO Scientific Program, respectively.

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Correspondence to Sara C. Mednick.

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Mednick, S., Nakayama, K., Cantero, J. et al. The restorative effect of naps on perceptual deterioration. Nat Neurosci 5, 677–681 (2002). https://doi.org/10.1038/nn864

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