Timothy H Monk

Summary

Affiliation: University of Pittsburgh
Country: USA

Publications

  1. ncbi Wrist actigraphic measures of sleep in space
    T H Monk
    Sleep and Chronobiology Center, University of Pittsburgh Medical Center, Western Psychiatric Institute and Clinic, PA 15213, USA
    Sleep 22:948-54. 1999
  2. ncbi Measuring sleep habits without using a diary: the sleep timing questionnaire
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, PA 15213, USA
    Sleep 26:208-12. 2003
  3. ncbi A simple way to measure daily lifestyle regularity
    Timothy H Monk
    Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Centre, Pittsburgh, PA 15213, USA
    J Sleep Res 11:183-90. 2002
  4. ncbi The role of chronobiology in sleep disorders medicine
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, 3811 O Hara Street, Pittsburgh, PA 15213, USA
    Sleep Med Rev 7:455-73. 2003
  5. ncbi Decreased human circadian pacemaker influence after 100 days in space: a case study
    T H Monk
    Clinical Neuroscience Research Center, Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
    Psychosom Med 63:881-5. 2001
  6. ncbi A sleep diary and questionnaire study of naturally short sleepers
    T H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
    J Sleep Res 10:173-9. 2001
  7. ncbi Effects of afternoon "siesta" naps on sleep, alertness, performance, and circadian rhythms in the elderly
    T H Monk
    Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, PA, USA
    Sleep 24:680-7. 2001
  8. ncbi Inducing jet-lag in older people: directional asymmetry
    T H Monk
    Sleep and Chronobiology Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, USA
    J Sleep Res 9:101-16. 2000
  9. ncbi Circadian rhythms in healthy aging--effects downstream from the pacemaker
    T H Monk
    Sleep and Chronobiology Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pennsylvania, USA
    Chronobiol Int 17:355-68. 2000
  10. ncbi The sleep of healthy people--a diary study
    T H Monk
    Sleep and Chronobiology Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, PA, USA
    Chronobiol Int 17:49-60. 2000

Collaborators

Detail Information

Publications47

  1. ncbi Wrist actigraphic measures of sleep in space
    T H Monk
    Sleep and Chronobiology Center, University of Pittsburgh Medical Center, Western Psychiatric Institute and Clinic, PA 15213, USA
    Sleep 22:948-54. 1999
    ..Specifically, to determine whether bedtimes and waketimes can be identified from the actigraphic record, and whether actigraphic measures of sleep in space are related to polysomnographic (PSG) ones...
  2. ncbi Measuring sleep habits without using a diary: the sleep timing questionnaire
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, PA 15213, USA
    Sleep 26:208-12. 2003
    ..To develop a single-administration instrument yielding equivalent measures of sleep to those obtained from a formal (2-week) sleep diary...
  3. ncbi A simple way to measure daily lifestyle regularity
    Timothy H Monk
    Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Centre, Pittsburgh, PA 15213, USA
    J Sleep Res 11:183-90. 2002
    ..When a gender difference in lifestyle regularity appeared, it was detected by both SRM-5 and SRM-17 measures...
  4. ncbi The role of chronobiology in sleep disorders medicine
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, 3811 O Hara Street, Pittsburgh, PA 15213, USA
    Sleep Med Rev 7:455-73. 2003
    ....
  5. ncbi Decreased human circadian pacemaker influence after 100 days in space: a case study
    T H Monk
    Clinical Neuroscience Research Center, Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
    Psychosom Med 63:881-5. 2001
    ....
  6. ncbi A sleep diary and questionnaire study of naturally short sleepers
    T H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
    J Sleep Res 10:173-9. 2001
    ..Few measures showed reliable differences between naturally short sleepers and controls except the obvious ones related to sleep duration. There was, however, some evidence for subclinical hypomanic symptoms in naturally short sleepers...
  7. ncbi Effects of afternoon "siesta" naps on sleep, alertness, performance, and circadian rhythms in the elderly
    T H Monk
    Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, PA, USA
    Sleep 24:680-7. 2001
    ..To determine the effects of a 90-minute afternoon nap regimen on nocturnal sleep, circadian rhythms, and evening alertness and performance levels in the healthy elderly...
  8. ncbi Inducing jet-lag in older people: directional asymmetry
    T H Monk
    Sleep and Chronobiology Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, USA
    J Sleep Res 9:101-16. 2000
    ..Subjective alertness suffered more disruption after the phase advance than after the phase delay...
  9. ncbi Circadian rhythms in healthy aging--effects downstream from the pacemaker
    T H Monk
    Sleep and Chronobiology Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pennsylvania, USA
    Chronobiol Int 17:355-68. 2000
    ....
  10. ncbi The sleep of healthy people--a diary study
    T H Monk
    Sleep and Chronobiology Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, PA, USA
    Chronobiol Int 17:49-60. 2000
    ....
  11. ncbi The relationship between lifestyle regularity and subjective sleep quality
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213, USA
    Chronobiol Int 20:97-107. 2003
    ..Thus, there appears to be an association between lifestyle regularity and good sleep, though the direction of causality remains to be tested...
  12. ncbi Sleep variability, health-related practices, and inflammatory markers in a community dwelling sample of older adults
    Michele L Okun
    Sleep Medicine Institute and Department of Psychiatry, University of Pittsburgh School of Medicine, Western Psychiatric Institute and Clinic, Pittsburgh, PA 15213, USA
    Psychosom Med 73:142-50. 2011
    ..Health behaviors, including average aggregate measures of sleep, have been linked to increased inflammation in older adults. Variability in sleep timing may also be associated with increased inflammation...
  13. ncbi Efficacy of brief behavioral treatment for chronic insomnia in older adults
    Daniel J Buysse
    Sleep Medicine Institute, Department of Psychiatry, University of Pittsburgh School of Medicine, USA
    Arch Intern Med 171:887-95. 2011
    ..Cognitive behavioral treatments are efficacious but not widely available. The aim of this study was to test the efficacy of brief behavioral treatment for insomnia (BBTI) vs an information control (IC) condition...
  14. ncbi Sleep and circadian rhythms in spousally bereaved seniors
    Timothy H Monk
    Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
    Chronobiol Int 25:83-98. 2008
    ..However, this disruption does not appear to be due to bereavement-related disruptions in the circadian system...
  15. ncbi Effects of a two-hour change in bedtime on the sleep of healthy seniors
    Timothy H Monk
    Neuroscience Clinical and Translational Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
    Chronobiol Int 26:526-43. 2009
    ..There were no effects related to the phase angle between Tmin and rise-time. The relative benefits of longer vs. more efficient sleep in the elderly require further investigation...
  16. ncbi Age-related differences in the lifestyle regularity of seniors experiencing bereavement, care-giving, insomnia, and advancement into old-old age
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213, USA
    Chronobiol Int 23:831-41. 2006
    ..This may represent an adaptive behavioral response that might be used in future therapeutic approaches...
  17. ncbi Using daily 30-min phase advances to achieve a 6-hour advance: circadian rhythm, sleep, and alertness
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
    Aviat Space Environ Med 77:677-86. 2006
    ....
  18. ncbi Does social support differentially affect sleep in older adults with versus without insomnia?
    Wendy M Troxel
    Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA 15213, USA
    J Psychosom Res 69:459-66. 2010
    ..We examined social support as a potential protective factor for sleep among older adults (60 years and older) with insomnia (n=79) and age- and sex-matched controls without insomnia (n=40)...
  19. ncbi Financial strain is a significant correlate of sleep continuity disturbances in late-life
    Martica Hall
    Department of Psychiatry, University of Pittsburgh School of Medicine, 3811 O Hara Street, Pittsburgh, PA 15213, United States
    Biol Psychol 77:217-22. 2008
    ..01). Our results show that chronic stress, as measured by ongoing financial strain, is a significant correlate of sleep disturbances in the elderly, even after adjusting for factors known to impact sleep in late-life...
  20. ncbi Effects of a brief behavioral treatment for late-life insomnia: preliminary findings
    Anne Germain
    Department Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
    J Clin Sleep Med 2:403-6. 2006
    ..CONCLUSION: BBTI was associated with significant improvements in sleep measures and in daytime symptoms of anxiety and depression. BBTI appears to be a promising intervention for older adults with insomnia...
  21. ncbi Sleep in healthy seniors: a diary study of the relation between bedtime and the amount of sleep obtained
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, PA 15213, USA
    J Sleep Res 15:256-60. 2006
    ..g. age-dependent alterations in phase angle and homeostatic sleep need)...
  22. ncbi Using nine 2-h delays to achieve a 6-h advance disrupts sleep, alertness, and circadian rhythm
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
    Aviat Space Environ Med 75:1049-57. 2004
    ....
  23. ncbi Night-to-night sleep variability in older adults with and without chronic insomnia
    Daniel J Buysse
    Sleep Medicine Institute and Neuroscience Clinical and Translational Research Center, Department of Psychiatry, School of Medicine, University of Pittsburgh, PA 15213, USA
    Sleep Med 11:56-64. 2010
    ....
  24. ncbi Shiftworkers report worse sleep than day workers, even in retirement
    Timothy H Monk
    Sleep and Chronobiology Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
    J Sleep Res 22:201-8. 2013
    ..The shiftwork exposure effect did not appear to be mediated by either morningness or current health. Prior exposure to shiftwork would appear to be related to currently reported sleep problems during retirement...
  25. ncbi Circadian patterns of sleep, sleepiness, and performance in older and younger adults
    Daniel J Buysse
    Sleep and Chronobiology Program, University of Pittsburgh, PA, USA
    Sleep 28:1365-76. 2005
    ..To compare circadian patterns of sleep, subjective sleepiness, and psychomotor performance in older and younger adults...
  26. ncbi Behavioral circadian regularity at age 1 month predicts anxiety levels during school-age years
    Timothy H Monk
    Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
    Psychiatry Res 178:370-3. 2010
    ..Baby SRM score at age 1 month significantly predicted the child's school (K-9, 5 time points) anxiety level (more regular=less anxious), and may be mediated through sociability and directed-attention pathways...
  27. ncbi Circadian type and bed-timing regularity in 654 retired seniors: correlations with subjective sleep measures
    Timothy H Monk
    Neuroscience Clinical and Translational Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, 3811 O Hara Street, Pittsburgh, PA 15213, USA
    Sleep 34:235-9. 2011
    ..Using telephone interview data from retired seniors to explore how inter-individual differences in circadian type (morningness) and bed-timing regularity might be related to subjective sleep quality and quantity...
  28. ncbi Replicable differences in preferred circadian phase between bipolar disorder patients and control individuals
    Joel Wood
    Departments of Psychiatry and Human Genetics, University of Pittsburgh School of Medicine and Graduate School of Public Health, Western Psychiatric Institute and Clinic, Pittsburgh, PA, United States
    Psychiatry Res 166:201-9. 2009
    ..Individuals with elevated depressive mood scores are more likely to be evening types. Our results suggest a replicable relationship between circadian phase and morbid mood states...
  29. ncbi Self-reported sleep quality predicts poor cognitive performance in healthy older adults
    Robert D Nebes
    Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, PA 15213, USA
    J Gerontol B Psychol Sci Soc Sci 64:180-7. 2009
    ..Sleep problems may contribute to performance variability between elderly individuals but only in certain cognitive domains...
  30. ncbi Healthy older adults' sleep predicts all-cause mortality at 4 to 19 years of follow-up
    Mary Amanda Dew
    Department of Psychiatry, University of Pittsburgh School of Medicine and Western Psychiatric Institute and Clinic, Pittsburgh, Pennsylvania 15213, USA
    Psychosom Med 65:63-73. 2003
    ..We examined whether electroencephalographic (EEG) sleep parameters predicted survival time independently of known predictors of all-cause mortality...
  31. ncbi Heritability of morningness-eveningness and self-report sleep measures in a family-based sample of 521 hutterites
    Lambertus Klei
    Department of Statistics, Carnegie Mellon University, Pittsburgh, PA 15213, USA
    Chronobiol Int 22:1041-54. 2005
    ..In view of the impact of circadian malfunction on human health, it may be worthwhile to map genetic factors impacting circadian and sleep variation...
  32. ncbi Circadian phase variation in bipolar I disorder
    Hader A Mansour
    Department of Psychiatry and Human Genetics, University of Pittsburgh School of Medicine, Western Psychiatric Institute and Clinic, PA 15213, USA
    Chronobiol Int 22:571-84. 2005
    ..Thus, distinct patterns of M/E were noted among BD1 patients and among BD1 subgroups. The impact of medication, mood state, and chronicity on CS scores needs to be considered...
  33. ncbi Morningness-eveningness and lifestyle regularity
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213, USA
    Chronobiol Int 21:435-43. 2004
    ..Thus it appears that morning types appear to be more regular in their daily lifestyle than are evening types, suggesting a relationship between these two aspects of human circadian behavior...
  34. ncbi Treating complicated grief: effects on sleep quality
    Anne Germain
    Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
    Behav Sleep Med 4:152-63. 2006
    ..Given that sleep disturbance is a risk factor for poor health outcomes, adjunctive sleep interventions may be necessary to enhance CGT outcomes...
  35. ncbi A quantitative approach to distinguishing older adults with insomnia from good sleeper controls
    Jessica C Levenson
    Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA
    J Clin Sleep Med 9:125-31. 2013
    ..The purpose of this study was to identify the optimal quantitative thresholds for actigraphy and sleep diary that differentiate older adults (> 60 years) with insomnia from good sleeper controls...
  36. ncbi Masking effects of posture and sleep onset on core body temperature have distinct circadian rhythms: results from a 90-min/day protocol
    Douglas E Moul
    Department of Psychiatry, University of Pittsburgh School of Medicine, Western Psychiatric Institute and Clinic, PA 15213, USA
    J Biol Rhythms 17:447-62. 2002
    ..These findings confirm the need for nonlinear models of temperature responses to postural changes and sleep that incorporate circadian variability in these masking effects...
  37. ncbi Approaches to unravel the genetics of sleep
    Mikhil N Bamne
    Department of Psychiatry, 441 Western Psychiatric Institute and Clinic, 3811 O Hara St, University of Pittsburgh, School of Medicine, Pittsburgh, PA 15213, USA
    Sleep Med Rev 14:397-404. 2010
    ..This paper discusses these issues, reviews published studies of sleep phenotypes, and recommends cost-effective methods to advance knowledge of the genetic determinants of normal sleep patterns...
  38. ncbi The post-lunch dip in performance
    Timothy H Monk
    Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, 3811 O Hara Street, Pittsburgh, PA 15213, USA
    Clin Sports Med 24:e15-23, xi-xii. 2005
    ..It is certainly exacerbated by a high-carbohydrate lunch, and may be more likely to occur in extreme morning-type individuals...
  39. ncbi Personality correlates with sleep-wake variables
    Adriane M Soehner
    Department of Psychology, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
    Chronobiol Int 24:889-903. 2007
    ..Personality appears to affect certain aspects of the timing and subjective quality of sleep, but not necessarily its duration...
  40. ncbi Aging human circadian rhythms: conventional wisdom may not always be right
    Timothy H Monk
    Clinical Neuroscience Research Center, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
    J Biol Rhythms 20:366-74. 2005
    ....
  41. ncbi Human regional cerebral glucose metabolism during non-rapid eye movement sleep in relation to waking
    Eric A Nofzinger
    Department of Psychiatry, University of Pittsburgh School of Medicine, PA 15213 2593, USA
    Brain 125:1105-15. 2002
    ....
  42. ncbi What constitutes too long of a delay? Determining the cortisol awakening response (CAR) using self-report and PSG-assessed wake time
    Michele L Okun
    University of Pittsburgh School of Medicine, Department of Psychiatry, United States
    Psychoneuroendocrinology 35:460-8. 2010
    ..Later collection times and reduced CAR values may affect the interpretation of clinical associations. Our data also show that S-R assessments of wake time perform equally well to PSG for evaluating adherence with CAR sampling procedures...
  43. ncbi Circadian genes and bipolar disorder
    Hader A Mansour
    Department of Psychiatry, University of Pittsburgh School of Medicine, Western Psychiatric Institute and Clinic, PA 15213, USA
    Ann Med 37:196-205. 2005
    ..Association studies that analyzed circadian genes in BD have been initiated and are reviewed. Other avenues for research are also discussed...
  44. ncbi Practical consequences of fatigue-related performance failures
    Timothy H Monk
    Human Chronobiology Research Program, Department ofPsychiatry, University ofPittsburgh School of Medicine, Pittsburgh, PA, USA
    Sleep 30:1402-3. 2007
  45. ncbi The daily life of complicated grief patients--what gets missed,what gets added?
    Timothy H Monk
    Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Room E 1123, 3811 O Hara Street, Pittsburgh, Pennsylvania, 15213, USA
    Death Stud 30:77-85. 2006
    ..Patients were significantly more likely than controls to miss contact with another person, breakfast, lunch, dinner, starting work, and going outside, and to add a nap and evening snack...
  46. ncbi Hormonal changes during 17 days of head-down bed-rest
    Marc Antoine Custaud
    Laboratoire de Physiologie de l Environnement GIP exercice, Faculte de Medecine Lyon Grange Blanche, 8 avenue Rockefeller, F 69373 Lyon Cedex 08, France
    Life Sci 72:1001-14. 2003
    ..A decrease during the night was noted for normetadrenaline urinary derivates, but only during the HDBR...
  47. ncbi Which aspects of morningness-eveningness change with age?
    Timothy H Monk
    J Biol Rhythms 22:278-80. 2007