Biomedical subjects

M Nesca

Publications and source records attributed to M Nesca.

3 recordsLinked to original sources

PubMed1994

Recognition memory, sleep and circadian rhythms.

In Experiment 1, subjects learned a list of words and were tested for recognition of them 24 hours later. For the delayed sleep group, learning was followed by a period of wakefulness; for the immediate sleep group, it was followed by a period of sleep. Retention was significantly better for the immediate sleep group, consistent with the notion that consolidation is enhanced by the interpolation of sleep shortly after learning. In Experiment 2, subjects were tested approximately eight hours after learning. The normal waking group learned and was tested after a period of daytime weakfulness; the normal sleep group learned and was tested after a period of nighttime sleep; and the sleep deprivation group learned and was tested after a period of nighttime wakefulness. Retention for the normal sleep group was superior to that of the normal waking group, thus extending the commonly observed effect of sleep on memory to the domain of recognition memory. However, we found that retention was not better for the normal sleep group than for the sleep deprivation group suggesting that the effect of sleep on memory may be partially due to circadian rhythms.

Arousal↗

PubMed1993

Laboratory sleep patterns and dream content of type A and B scoring college students.

The suggestion that there may be a discrepancy between subjective and objective measures of sleep led us to explore the sleep and dreams of 7 Type A and 7 Type B scorers in our laboratory over a three-night period. In earlier studies, Type A scorers had indicated that their sleep was somewhat more disturbed and their dream content generally more active and negative in tone than that of Type B scorers. However, in this study the only differences were that Type A scorers had a greater number of body movements and greater dream recall than did Type B scorers. These results seem to indicate that the impression Type A scorers have of the quality of their sleep and dreams may be a function of their waking life-style.

Adult↗

PubMed1992

Sleep parameters of type A and B scoring college students.

162 subjects, half of whom scored between 310 and 420 and half of whom scored between 184 and 256 on the Survey of Work Style questionnaire, participated in this study. The former group was defined as Type A scorers and the latter as Type B scorers. Type A scorers had more trouble falling asleep, had more nightmares, and spent less time asleep than did Type B scorers. However, there was no difference between the two groups in the amount of dream recall or on the morningness/eveningness continuum.

Adult↗