Sleep loss impairs short and novel language tasks having a prefrontal focus

  title={Sleep loss impairs short and novel language tasks having a prefrontal focus},
  author={Yvonne Harrison and James A. Horne},
  journal={Journal of Sleep Research},
Most cognitive tests administered during sleep loss are well rehearsed to remove practice effects. This can introduce tedium and a loss of novelty, which may be the key to the test's subsequent sensitivity to sleep loss, and why it may need only a few minutes administration before sleep loss effects are apparent. There is little evidence to show that any of these tests are actually affected by sleep loss if given de novo, without practice, but using a non‐sleep deprived control group. Although… 

Sleep Loss and Temporal Memory

  • Y. HarrisonJ. Horne
  • Psychology, Biology
    The Quarterly journal of experimental psychology. A, Human experimental psychology
  • 2000
It is shown that sleep deprivation impairs temporal memory (i.e. recency) despite other conditions promoting optimal performance, and caffeine was used to reduce “sleepiness”.

Chronic partial sleep loss increases the facilitatory role of a masked prime in a word recognition task

The findings suggest that while no evidence of impairment to lexical access was observed after sleep loss, an increase in automatic processing may occur as a consequence of compensatory mechanisms.

Sleep loss‐related decrements in planning performance in healthy elderly depend on task difficulty

The results indicate that sleep loss‐related decrements in planning performance depend on difficulty level, and that apparently insensitive tasks can turn out to be sensitive to sleep loss and circadian variation.

Neurocognitive consequences of sleep deprivation.

Performance deficits associated with sleep disorders are often viewed as a simple function of disease severity; however, recent experiments suggest that individual vulnerability to sleep loss may play a more critical role than previously thought.

Individual differences in working memory efficiency modulate proactive interference after sleep deprivation

Results indicate that resistance to PI after SD is dependent on WM efficiency, highlighting the importance of individual differences in sleep deprivation studies.

Individual differences in working memory efficiency modulate proactive interference after sleep deprivation

Whether and how sleep loss affects executive functioning are still under debate. In this study, we examined the role of individual differences in determining the levels of working memory (WM)

One night of sleep loss impairs innovative thinking and flexible decision making.

The critical reasoning task was unaffected by sleep loss, whereas performance at the game significantly deteri orated after 32-36 h ofSleep deprivation, when sleep deprivation led to more rigid thinking, increased perseverative errors, and marked difficulty in appreciating an updated situation.

Sleep deprivation: Impact on cognitive performance

Cognitive recovery processes seem to be more demanding in partial sleep restriction than in total SD, and studies on its effects on more demanding cognitive functions are lacking.

Altered brain response to verbal learning following sleep deprivation

It is shown that there are dynamic, compensatory changes in cerebral activation during verbal learning after sleep deprivation and the PFC and parietal lobes are implicated in this compensation.



The effects of sleep deprivation on divergent thinking and attention processes

Results support the hypothesis that sleep serves a function of cognitive restitution, particularly in the maintenance of attentional mechanisms, and suggest that cognitive measures following sleep deprivation have not been adequately explored.

Sleep loss and "divergent" thinking ability.

It is found that 1 night of sleep loss can affect divergent thinking, and the outcome for convergent thinking tasks, which are more resilient to short-term sleep loss, is more resilient than that for convergence thinking tasks.

Sleep deprivation affects speech.

There was a significant reduction in the subjects' use of appropriate intonation in the voice after SD, with subjects displaying more monotonic or flattened voices.

Changes in cognitive processing following short-term cumulative partial sleep deprivation and recovery oversleeping

Abstract The effects on cognitive processing of 1 and 5 cumulative nights of partial sleep deprivation (PSD) and 1 and 2 nights of subsequent recovery oversleep was studied using an anagrams test and

Human Sleep, Sleep Loss and Behaviour

  • J. Horne
  • Biology, Psychology
    British Journal of Psychiatry
  • 1993
The prefrontal cortex (PFC) consists of the cortex lying in front of the primary and secondary motor cortex, and includes the dorsolateral and orbital areas, frontal eye fields, and Broca's area. Not

High incentive effects on vigilance performance during 72 hours of total sleep deprivation.

Response suppression, initiation and strategy use following frontal lobe lesions

Willed action and the prefrontal cortex in man: a study with PET

Willed acts in the two response modalities studied (speaking a word, or lifting a finger) were associated with increased blood flow in the dorsolateral prefrontal cortex (Brodmann area 46) and decreases in blood flow were also associated, but the location of these decreases was modality dependent.

A field study of sleep disturbance: effects of aircraft noise and other factors on 5,742 nights of actimetrically monitored sleep in a large subject sample.

It was shown that only a minority of ANEs affected sleep, and, for most of the authors' subjects, that domestic and idiosyncratic factors had much greater effects, than previously thought.

Echo-planar magnetic resonance imaging studies of frontal cortex activation during word generation in humans.

Nine subjects were studied by high-speed magnetic resonance imaging while performing language-based tasks, finding an increase in signal accompanied performance of the tasks, with significantly more activation for verb generation than for repeating.