I am conducting a study on the effect of sleep pattern on cognitive performance, and I need a declarative task that is sensitive to sleep chronotypes. In addition, the task must be difficult to memorize in order to prevent practice or carry over effect.
Dear James,
This paper gives an idea:
Influence of Midday Naps on Declarative Memory Performance and Motivation
Manuel Schabus et al. Somnologie Vol 9, Issue 3, pages 148–153, August 2005
"Subjects were trained on a declarative word-pair association task (prior to sleep) and were tested (cued recall) before and after 1 h of midday napping."
You can make the task more difficult by changing language or using difficult or strange words that are not likely to be used in everyday language.
Dear sir
please chack following link and attach files
www.ncbi.nlm.nih.gov/pmc/articles/PMC2656292/
physrev.physiology.org/content/93/2/681
For a review in relation to sleep deprivation and a meta-analysis in relation to obstructive sleep apnoea take a look at https://www.researchgate.net/publication/51110003_Neuropsychological_Effects_of_Sleep_Loss_Implication_for_Neuropsychologists and https://www.researchgate.net/publication/235392955_Memory_and_Obstructive_Sleep_Apnea_A_Meta-Analysis, respectively. Both of these discuss the nature of declarative (episodic) memory deficits associated with poor sleep. Whatever you choose, practice effects are going to be a problem, because participants are only ever naive to a memory task once. Even if you use parallel forms (e.g. Rey Auditory Verbal Learning Test or Hopkins Verbal Learning Test have multiple, almost parallel forms), participants learn how to approach a test which impacts on the next time they undertake it. If you really want to avoid practice effects, you will need a multiple baseline design (e.g. minimum 3 baseline measurements would be ideal, but even 2 would be better than 1). Remember, too, to present the test forms in a different order for each participant (either using a full factorial design or a latin square). I was not sure what you mean by 'carry over the effect' so cannot advise there. Good luck.
Article Neuropsychological Effects of Sleep Loss: Implication for Ne...
Article Memory and Obstructive Sleep Apnea: A Meta-Analysis
From a meta-analysis we did a few years ago, the best i.e., mot sensitive outcome varaiable with sleep disorders is reaction time--not cognitive tasks
Dear sir
The results of research is different but te following articles may be useful.
Adverse effects of 24 hours of sleep deprivation on cognition and stress hormones.
Joo EY, Yoon CW, Koo DL, Kim D, Hong SB.
J Clin Neurol. 2012 Jun;8(2):146-50. doi: 10.3988/jcn.2012.8.2.146. Epub 2012 Jun 29.
PMID:22787499
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physrev.physiology.org/content/93/2/681
I would agree that reaction time is very sensitive in terms of cognitive performance. It seems there is a lot of variability from study to study in terms of sleep on cognitive performance (specific tasks - ranging from stroop, trail making, n-back, rey auditory, etc.), but psychomotor vigilance (i.e. PVT) is usually significantly impacted across the board.
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