Scopolamine does not impact declarative and motor memory consolidation across a night of sleep or a day of wakefulness.

It has been proposed that normal waking levels of acetylcholine (ACH) are important for initial memory acquisition, and that decreased ACH is critical for memory consolidation. Sleep is thought to benefit memory consolidation in part due to the predominance of low ACH levels observed during non-rapid eye movement sleep. Here we examined whether sleep and ACH suppression with the cholinergic antagonist scopolamine impact declarative and motor memory consolidation across a night of sleep or a day of wakefulness. Eighty-seven participants trained on a declarative and motor memory task in the morning or evening. Following training, participants were administered a scopolamine (0.4 mg) or placebo capsule. Participants were retested on the tasks 12 h later after a day of wake or a night of sleep. Reducing ACH levels with scopolamine provided no consolidation benefit for either task. Additionally, we found that sleep had a pronounced beneficial effect for declarative, but not motor memory consolidation. Lastly, in an exploratory analysis of the relationship between motivation and memory performance, we found that indices of intrinsic motivation were associated with improved memory acquisition and consolidation. Our findings show that reducing ACH levels after memory acquisition has no impact on the consolidation of declarative or motor memories. Additionally, sleep benefitted declarative memory but not motor memory consolidation, which highlights the interesting, though uncommon, finding that performance on some tasks might not benefit from sleep. Interestingly, the future study of intrinsic motivation may be warranted given its relationship to memory acquisition and consolidation. These findings add to our understanding of how sleep and acetylcholine impact memory consolidation, and may provide some insight about the role of ACH in memory disorders such as Alzheimer's disease.

The reliability of a VISION COACH task as a measure of psychomotor skills.

The VISION COACH™ interactive light board is designed to test and enhance participants' psychomotor skills. The primary goal of this study was to examine the test-retest reliability of the Full Field 120 VISION COACH task. One hundred eleven male and 131 female adult participants completed six trials where they responded to 120 randomly distributed lights displayed on the VISION COACH interactive light board. The mean time required for a participant to complete a trial was 101 seconds. Intraclass correlation coefficients, ranging from 0.962 to 0.987 suggest the VISION COACH Full Field 120 task was a reliable task. Cohen's d's of adjacent pairs of trials suggest learning effects did not negatively affect reliability after the third trial.

Group differences in preferences for a novel nightstand.

OBJECTIVE: Multiple user groups (patients and employees at a rehabilitation facility, community-dwelling seniors, and university students) participated in a study that examined their preferences for the features and functions of three novel nightstand prototypes. BACKGROUND: It is valuable to get input from different user groups in order to improve furniture usefulness and usability, especially furniture prevalent in clinical settings where users of all age groups are found. METHODS: Feedback was obtained from different user groups in both clinical (rehabilitation facility) and nonclinical (university) settings. This was done using structured interviews to ask participants about multiple features of the novel nightstand designs. RESULTS: There were several features that all groups preferred. There were also some distinctly opposing opinions between groups. In general, the patient group showed the most similarities to the other groups. CONCLUSION: This research explores differences and similarities in preferences for nightstand design across a variety of user groups. It yields ideas for improving the nightstand design to be useful for a wider group of people.