Eva Libman

How is good and poor sleep in older adults and college students related to daytime sleepiness, fatigue, and ability to concentrate?

We compared good sleepers with minimally and highly distressed poor sleepers on three measures of daytime functioning: self-reported fatigue, sleepiness, and cognitive inefficiency. In two samples (194 older adults, 136 college students), we tested the hypotheses that (1) poor sleepers experience more problems with daytime functioning than good sleepers, (2) highly distressed poor sleepers report greater impairment in functioning during the day than either good sleepers or minimally distressed poor sleepers, (3) daytime symptoms are more closely related to psychological adjustment and to psychologically laden sleep variables than to quantitative sleep parameters, and (4) daytime symptoms are more closely related to longer nocturnal wake times than to shorter sleep times. Results in both samples indicated that poor sleepers reported more daytime difficulties than good sleepers. While low- and high-distress poor sleepers did not differ on sleep parameters, highly distressed poor sleepers reported consistently more difficulty in functioning during the day and experienced greater tension and depression than minimally distressed poor sleepers. Severity of all three daytime problems was generally significantly and positively related to poor psychological adjustment, psychologically laden sleep variables, and, with the exception of sleepiness, to quantitative sleep parameters. Results are used to discuss discrepancies between experiential and quantitative measures of daytime functioning.

Selective attentional bias related to the noticeability aspect of anxiety symptoms in generalized social phobia.

Persons with generalized social phobia were compared to nonanxious controls using the modified Stroop test of attentional biases and self-report questionnaires. Results indicated that participants with social phobia showed attentional biases to socially threatening words such as those describing negative evaluation (e.g., criticize) and those describing anxiety symptoms that are noticeable by others (e.g., blushing) as compared to nonanxious control participants, but not to words describing anxiety symptoms that are less noticeable to others. Participants with social phobia showed more attentional bias to words denoting noticeable anxiety symptoms than to words denoting less noticeable anxiety symptoms, while nonanxious control participants showed no significant difference in attentional bias between words denoting more and less noticeable anxiety symptoms. Color-naming response latencies to these social threat words (negative evaluation and noticeable anxiety symptoms) were significantly positively correlated to scores on self-report measures of social anxiety and distress, while response latencies to less noticeable anxiety symptoms were not significantly correlated to other measures of anxiety or distress. Results support presence of specific attentional biases in persons with generalized social phobia, and highlight importance of the noticeability aspect of anxiety symptoms to the psychopathology of social phobia.

Time Estimation in Good and Poor Sleepers

Time estimation was examined in 148 older good and poor sleepers in analogue and naturalistic sleep settings. On analogue tasks, both “empty” time and time listening to an audiobook were overestimated by both good and poor sleepers. There were no differences between groups. “Empty” time was experienced as “dragging.” In the sleep setting, most poor sleepers underestimated nocturnal sleep and overestimated awake times related to their own sleep problem: sleep onset vs. sleep maintenance insomnia. Good sleepers did the opposite. Severity of sleep problem and size of time estimation errors were unrelated. Greater night-to-night wake time variability was experienced by poor than by good sleepers. Psychological adjustment was unrelated to time estimations and to magnification or minimization of sleep problems. The results suggest that for poor sleepers who magnify their sleep problem, self-monitoring can be of benefit by demonstrating that the sleep problem is not as severe as believed.

Methodological issues in the study of sex therapy: Effective components in the treatment of secondary orgasmic dysfunction

Three components commonly utilized in sex therapy for secondary orgasmic dysfunction (Sensate Focus I, Sensate Focus II, and ban on intercourse) were studied, with the aim of not only exploring their effects on therapy outcome but also, in part, of sensitizing investigators to the benefits of incorporating component analyses within larger investigations of therapy outcome. The subjects were 23 married couples with the problem of secondary orgasmic dysfunction in the wife. Subjects were administered a multicomponent therapy program over a 14-week period. Daily self-monitoring data were analyzed to assess the impact of Sensate Focus exercises and banning intercourse on both broad (e.g., enjoyment) and narrow (e.g., orgasmic response) criteria of therapeutic effectiveness. Results indicated that for females, sensate focus exercises, in combination with a ban on intercourse, led to a significant increase in level of enjoyment for subsequent noncoital sexual caressing as well as intercourse. Orgasmic responsiveness, however, was not affected. The methodological issues of broad versus narrow therapeutic effects, compliance with treatment, and cost-effective techniques for the study of sex therapy components are discussed.

What Do Older Good and Poor Sleepers Do During Periods of Nocturnal Wakefulness? The Sleep Behaviors Scale: 60+

To determine whether older good and poor sleepers with and without insomnia complaints differ in the nature of activities they engage in during periods of nocturnal wakefulness, the authors developed and evaluated the Sleep Behaviors Scale: 60+. Good sleepers (n = 163), low-distress poor sleepers (n = 49), and high-distress poor sleepers (n = 28) were compared on this measure as well as on sleep parameters, personality, lifestyle, and cognitive-affective variables. Findings indicate good psychometric properties for the new measure, offer a rationale for examining the frequency of the nocturnal behaviors reflected by the measures 4 subscales (Active Behaviors, Relaxation, Cognitive Arousal, and Medication), and suggest a possible role for these behaviors in the etiology and treatment of insomnia.

A diagnostic symptom profile for sleep disorder in primary care patients

OBJECTIVEnThe aim of the present study was (1) to evaluate the extent and nature of sleep disorder-related symptoms in the older primary care patient population and (2) to differentiate a pattern of self-reported symptoms that identify patients who should be referred to the sleep clinic for further evaluation.nnnMETHODnOne hundred ninety-six older adults recruited from family practice centers were administered a brief symptom survey measure. All were invited to participate in an extensive self-report evaluation, consultation with a sleep medicine specialist, and an overnight polysomnographic study.nnnRESULTSnA substantial number of older primary care patients report symptoms related directly or indirectly to physiological sleep disorder. Over 30% of total reported some insomnia, 40% daytime sleepiness, and 10% apnea. Those participants who agreed to pursue further aspects of the study protocol endorsed a higher number and greater severity of primary sleep disorder symptoms than those who declined to continue beyond the first phases. Participants who chose to pursue polysomnography (13% of total) had a very high rate (88.5) of diagnosed sleep disorder.nnnCONCLUSIONnThis study suggests that an older patient, male or female, who both endorses medically unexplained daytime sleepiness, fatigue, or other sleep disorder related symptoms and agrees to further evaluation, including overnight polysomnography, is at substantial risk for physiologically based sleep disorder. In the future, a brief, validated measure, such as the Sleep Symptom Checklist used in this study, would be an important part of the diagnostic process.

Impaired Sleep in Chronic Fatigue Syndrome How Is It Best Measured

The goal was to examine comparative efficacy of polysomnography, actigraphy, and self-report in evaluating the sleep/wake experience of individuals with chronic fatigue syndrome (CFS). Sleep parameters were evaluated by the three measurement modalities for the same night in 49 participants with CFS. Psychological and daytime functioning were measured by self-report. Results indicate that: (a) objectively measured nocturnal sleep time effectively approximated subjective experience although nocturnal wakefulness did not; (b) total sleep time and sleep efficiency differentiated individuals with and without insomnia complaints; (c) daytime sleepiness, fatigue, and non-refreshing sleep were not reflected by the objective sleep-related measures (polysomnography and actigraphy).

Sleep disorder symptoms are common and unspoken in Canadian general practice

OBJECTIVEnPrimary care patients were surveyed for what sleep disorder symptoms they discussed with their physicians. Their responses were compared with those of new Sleep clinic patients. The goal was to discover what symptom presentation leads to a successful referral to a sleep clinic.nnnMETHODSnWe recruited two samples: 191 older Primary care patients and 138 Sleep clinic patients. Participants completed the Sleep Symptom Checklist (SSC). This consists of 21 symptoms in four domains: insomnia, sleep disorder, daytime symptoms and psychological distress. All respondents indicated which symptoms had been discussed with their physician in the past year. Primary care subjects were designated as Decliners (completed SSC, refused further evaluation), Dropouts [completed some evaluation steps, but not polysomnography (PSG)] and Completers (completed PSG).nnnRESULTSnPrimary care participants frequently had symptoms but relatively few had discussed them with their doctor. Sleep clinic participants discussed significantly more symptoms with their referring physician than did Primary care Dropouts or Decliners in all categories except psychological distress. Primary care Completers, 88.5% of whom were ultimately diagnosed with sleep apnoea/hypopnoea syndrome and/or periodic limb movement disorder, also discussed their sleep disorder symptoms less frequently than did Sleep clinic patients but tended to give more prominence to symptoms of insomnia and impaired daytime function.nnnCONCLUSIONSnThe findings suggest that Primary care patients often have symptoms they do not discuss, even when a primary sleep disorder exists. The brief SSC checklist, developed in our laboratory, has potential to improve the referral rates of older primary care patients who have sleep disorder.

Sleep Apnea and Psychological Functioning in Chronic Fatigue Syndrome

Objectives were to explore: (1) whether sleep apnea/hypopnea syndrome (SAHS) should be considered a chronic fatigue syndrome (CFS) comorbidity, rather than a diagnostic exclusion criterion; and (2) to compare sleep/wake/ psychopathology in individuals with CFS, controls and another illness. Participants (CFS, SAHS, controls) completed questionnaires and were evaluated for SAHS; 68 percent were subsequently diagnosed with SAHS. CFS participants with and without SAHS did not differ. Both clinical groups were less well adjusted than controls. We conclude that SAHS should not be an exclusion criterion for CFS and that psychological problems in CFS seem a consequence of coping with illness.

Fatigue: The forgotten symptom of sleep apnea.

OBJECTIVEnThe present investigation was designed to explore the role and implications of both daytime sleepiness and fatigue in obstructive sleep apnea syndrome with respect to sleep, perceived health quality, and psychological functioning.nnnMETHODSnOur participants consisted of two groups: 124 older community volunteers who completed a polysomnographic sleep study and were diagnosed with sleep apnea, and 19 healthy controls. All participants completed self-report measures of sleepiness, fatigue, sleep quality, health quality, and psychological functioning.nnnRESULTSnThe apnea sample was divided according to clinically relevant cut-offs on sleepiness and fatigue. When those with mid-range scores were ruled out, the following groups remained: low sleepiness/low fatigue (LL, n=23), high sleepiness/high fatigue (HH, n=28), high sleepiness/low fatigue (HS, n=10) and low sleepiness/high fatigue (HF, n=13). The respiratory disturbance index did not differ significantly among these groups and only the two highly fatigued groups (HH and HF) experienced significantly lower average oxygen saturation than the control group. Analyses revealed that the HH group was significantly worse than the LL and control groups on most sleep, health quality, and psychological measures. On these same measures, the groups for whom fatigue was low (LL and HS), regardless of sleepiness, were similar to controls.nnnCONCLUSIONnWhen patients with sleep apnea are classified into different sleepiness/fatigue categories, the results show that high fatigue is associated with more severe dysfunction than high sleepiness. The current debate on whether to treat apnea patients with low sleepiness needs to consider the impact of fatigue.