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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Takahashi, M. & Arito, H. Maintenance of alertness and performance by a brief nap after lunch under prior sleep deficit. Sleep 23, 813–819 (2000).
Dinges, D.F. & Broughton, R.J. (eds.) Sleep and Alertness: Chronobiological, Behavioral and Medical Aspects of Napping (Raven, New York, 1989).
Bonnet, M.H. & Arand, D.L. Impact of naps and caffeine on extended nocturnal performance. Physiol. Behav. 56, 103–109 (1994).
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).
Rosa, R.R. Napping at home and alertness on the job in rotating shift workers. Sleep 16, 727–735 (1993).
Horne, J.A. & Reyner, L.A. Counteracting driver sleepiness: effects of napping, caffeine, and placebo. Psychophysiology 33, 306–309 (1996).
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).
Taub, J.M. Effects of habitual variations in napping on psychomotor performance, memory and subjective states. Int. J. Neurosci. 9, 97–112 (1979).
Gais, S., Plihal, W., Wagner, U. & Born, J. Early sleep triggers memory for early visual discrimination skills. Nat. Neurosci. 3, 1335–1339 (2000).
Plihal, W. & Born, J. Effects of early and late nocturnal sleep on priming and spatial memory. Psychophysiology 36, 571–582 (1999).
Smith, C. Sleep states and memory processes. Behav. Brain Res. 69, 137–145 (1995).
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).
Stickgold, R. Sleep: off-line memory reprocessing. Trends Cogn. Sci. 2, 484–492 (1998).
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).
Stickgold, R., James, L. & Hobson, J.A. Visual discrimination learning requires post-training sleep. Nat. Neurosci. 2, 1237–1238 (2000).
Karni, A. & Sagi, D. The time course of learning a visual skill. Nature 365, 250–252 (1993).
Fahle, M. Human pattern recognition: parallel processing and perceptual learning. Perception 23, 411–427 (1994).
Fahle, M. & Edelman, S. Long-term learning in vernier acuity: effects of stimulus orientation, range and of feedback. Vision Res. 33, 397–412 (1993).
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).
Plihal, W. & Born, J. Effects of early and late nocturnal sleep on declarative and procedural memory. J. Cogn. Neurosci. 9, 534–547 (1997).
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).
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).
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).
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).
Sejnowski, T.J. & Destexhe, A. Why do we sleep? Brain Res. 886 (Suppl.) 208–223 (2000).
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).
Bettina, B.L., Levi, D.M. & Reich, L.N. Vision Res. 34, 1679–1690 (1995).
Ball, K. & Sekuler, R. Direction-specific improvement in motion discrimination. Vision Res. 27, 953–963 (1987).
Watanabe, T., Nanez, J.E. & Saksaki, Y. Perceptual learning without perception. Nature 413, 844–848 (2001).
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).
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).
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).
Hoddes, E., Zarcone, V., Smythe, H., Phillips, R. & Dement, W.C. Quantification of sleepiness: a new approach. Psychophysiology 10, 431–436 (1973).
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.
The authors declare no competing financial interests.
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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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