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Items: 1 to 50 of 63

1.

Sleep and alertness in shift work disorder: findings of a field study.

Vanttola P, Härmä M, Viitasalo K, Hublin C, Virkkala J, Sallinen M, Karhula K, Puttonen S.

Int Arch Occup Environ Health. 2019 May;92(4):523-533. doi: 10.1007/s00420-018-1386-4. Epub 2018 Dec 3.

2.

The Stress Response in the Non-sensory Cells of the Cochlea Under Pathological Conditions-Possible Role in Mediating Noise Vulnerability.

Herranen A, Ikäheimo K, Virkkala J, Pirvola U.

J Assoc Res Otolaryngol. 2018 Dec;19(6):637-652. doi: 10.1007/s10162-018-00691-2. Epub 2018 Sep 6.

PMID:
30191426
3.

Recurrent On-Duty Sleepiness and Alertness Management Strategies in Long-Haul Airline Pilots.

Sallinen M, Åkerstedt T, Härmä M, Henelius A, Ketola K, Leinikka M, Kecklund G, Sihvola M, Tuori A, Virkkala J, Puttonen S.

Aerosp Med Hum Perform. 2018 Jul 1;89(7):601-608. doi: 10.3357/AMHP.5092.2018.

PMID:
29921351
4.

Physiological and autonomic stress responses after prolonged sleep restriction and subsequent recovery sleep in healthy young men.

van Leeuwen WMA, Sallinen M, Virkkala J, Lindholm H, Hirvonen A, Hublin C, Porkka-Heiskanen T, Härmä M.

Sleep Biol Rhythms. 2018;16(1):45-54. doi: 10.1007/s41105-017-0122-x. Epub 2017 Sep 8.

5.

Sleep and slow-wave activity in depressed adolescent boys: a preliminary study.

Santangeli O, Porkka-Heiskanen T, Virkkala J, Castaneda AE, Marttunen M, Paunio T, Urrila AS.

Sleep Med. 2017 Oct;38:24-30. doi: 10.1016/j.sleep.2017.06.029. Epub 2017 Jul 25.

PMID:
29031752
6.

Enhanced Memory Consolidation Via Automatic Sound Stimulation During Non-REM Sleep.

Leminen MM, Virkkala J, Saure E, Paajanen T, Zee PC, Santostasi G, Hublin C, Müller K, Porkka-Heiskanen T, Huotilainen M, Paunio T.

Sleep. 2017 Mar 1;40(3). doi: 10.1093/sleep/zsx003.

7.

Height gain after two-years-of-age is associated with better cognitive capacity, measured with Raven's coloured matrices at 15-years-of-age in Malawi.

Teivaanmäki T, Bun Cheung Y, Pulakka A, Virkkala J, Maleta K, Ashorn P.

Matern Child Nutr. 2017 Apr;13(2). doi: 10.1111/mcn.12326. Epub 2016 Jun 29.

PMID:
27356847
8.

c-Jun N-Terminal Phosphorylation: Biomarker for Cellular Stress Rather than Cell Death in the Injured Cochlea.

Anttonen T, Herranen A, Virkkala J, Kirjavainen A, Elomaa P, Laos M, Liang X, Ylikoski J, Behrens A, Pirvola U.

eNeuro. 2016 May 24;3(2). pii: ENEURO.0047-16.2016. doi: 10.1523/ENEURO.0047-16.2016. eCollection 2016 Mar-Apr.

9.

Children's Temperament and Academic Skill Development During First Grade: Teachers' Interaction Styles as Mediators.

Viljaranta J, Aunola K, Mullola S, Virkkala J, Hirvonen R, Pakarinen E, Nurmi JE.

Child Dev. 2015 Jul;86(4):1191-1209. doi: 10.1111/cdev.12379. Epub 2015 May 22.

PMID:
26011028
10.

Intravenous ethanol increases dopamine release in the ventral striatum in humans: PET study using bolus-plus-infusion administration of [(11)C]raclopride.

Aalto S, Ingman K, Alakurtti K, Kaasinen V, Virkkala J, Någren K, Rinne JO, Scheinin H.

J Cereb Blood Flow Metab. 2015 Mar;35(3):424-31. doi: 10.1038/jcbfm.2014.209. Epub 2014 Dec 10.

11.

Electro-oculography-based detection of sleep-wake in sleep apnea patients.

Virkkala J, Toppila J, Maasilta P, Bachour A.

Sleep Breath. 2015 Sep;19(3):785-9. doi: 10.1007/s11325-014-1060-3. Epub 2014 Oct 1.

PMID:
25269754
12.

Heart rate variability evaluation of Emfit sleep mattress breathing categories in NREM sleep.

Tenhunen M, Hyttinen J, Lipponen JA, Virkkala J, Kuusimäki S, Tarvainen MP, Karjalainen PA, Himanen SL.

Clin Neurophysiol. 2015 May;126(5):967-74. doi: 10.1016/j.clinph.2014.08.012. Epub 2014 Sep 6.

PMID:
25241203
13.

Heart rate variability for evaluating vigilant attention in partial chronic sleep restriction.

Henelius A, Sallinen M, Huotilainen M, Müller K, Virkkala J, Puolamäki K.

Sleep. 2014 Jul 1;37(7):1257-67. doi: 10.5665/sleep.3850.

14.

[Commencement of and adherence to CPAP treatment of patients with sleep-disordered breathing].

Salomaa ER, Myllylä M, Anttalainen U, Laitinen T, Kurki S, Virkkala J, Saaresranta T.

Duodecim. 2013;129(20):2175-82. Finnish.

PMID:
24340719
15.

Association of job strain with working hours, shift-dependent perceived workload, sleepiness and recovery.

Karhula K, Härmä M, Sallinen M, Hublin C, Virkkala J, Kivimäki M, Vahtera J, Puttonen S.

Ergonomics. 2013;56(11):1640-51. doi: 10.1080/00140139.2013.837514. Epub 2013 Sep 30.

PMID:
24079918
16.

Job strain, sleep and alertness in shift working health care professionals -- a field study.

Karhula K, Härmä M, Sallinen M, Hublin C, Virkkala J, Kivimäki M, Vahtera J, Puttonen S.

Ind Health. 2013;51(4):406-16. Epub 2013 May 22.

17.

Cold hands, warm feet: sleep deprivation disrupts thermoregulation and its association with vigilance.

Romeijn N, Verweij IM, Koeleman A, Mooij A, Steimke R, Virkkala J, van der Werf Y, Van Someren EJ.

Sleep. 2012 Dec 1;35(12):1673-83. doi: 10.5665/sleep.2242.

18.

Effects of cumulative sleep restriction on self-perceptions while multitasking.

Sallinen M, Onninen J, Tirkkonen K, Haavisto ML, Härmä M, Kubo T, Mutanen P, Virkkala J, Tolvanen A, Porkka-Heiskanen T.

J Sleep Res. 2013 Jun;22(3):273-81. doi: 10.1111/jsr.12013. Epub 2012 Nov 22.

19.

Combined frequency and time domain sleep feature calculation.

Virkkala J.

Conf Proc IEEE Eng Med Biol Soc. 2011;2011:7723-6. doi: 10.1109/IEMBS.2011.6091903.

PMID:
22256128
20.

Increased respiratory effort during sleep is non-invasively detected with movement sensor.

Tenhunen M, Rauhala E, Virkkala J, Polo O, Saastamoinen A, Himanen SL.

Sleep Breath. 2011 Dec;15(4):737-46. doi: 10.1007/s11325-010-0430-8. Epub 2010 Oct 20.

PMID:
20960067
21.

Sleep restriction for the duration of a work week impairs multitasking performance.

Haavisto ML, Porkka-Heiskanen T, Hublin C, Härmä M, Mutanen P, Müller K, Virkkala J, Sallinen M.

J Sleep Res. 2010 Sep;19(3):444-54. doi: 10.1111/j.1365-2869.2010.00823.x. Epub 2010 Apr 9.

22.

Tracheal sound parameters of respiratory cycle phases show differences between flow-limited and normal breathing during sleep.

Kulkas A, Huupponen E, Virkkala J, Saastamoinen A, Rauhala E, Tenhunen M, Himanen SL.

Physiol Meas. 2010 Mar;31(3):427-38. doi: 10.1088/0967-3334/31/3/010. Epub 2010 Feb 11.

PMID:
20150689
23.

Sleep stage classification with low complexity and low bit rate.

Virkkala J, Värri A, Hasan J, Himanen SL, Müller K.

Conf Proc IEEE Eng Med Biol Soc. 2009;2009:2506-9. doi: 10.1109/IEMBS.2009.5335165.

PMID:
19965209
24.

Intelligent methods for identifying respiratory cycle phases from tracheal sound signal during sleep.

Kulkas A, Huupponen E, Virkkala J, Tenhunen M, Saastamoinen A, Rauhala E, Himanen SL.

Comput Biol Med. 2009 Nov;39(11):1000-5. doi: 10.1016/j.compbiomed.2009.07.014. Epub 2009 Aug 26.

PMID:
19712930
25.

New tracheal sound feature for apnoea analysis.

Kulkas A, Huupponen E, Virkkala J, Tenhunen M, Saastamoinen A, Rauhala E, Himanen SL.

Med Biol Eng Comput. 2009 Apr;47(4):405-12. doi: 10.1007/s11517-009-0446-z. Epub 2009 Feb 11.

PMID:
19205772
26.

Automatic sleep stage classification using two facial electrodes.

Virkkala J, Velin R, Himanen SL, Värri A, Müller K, Hasan J.

Conf Proc IEEE Eng Med Biol Soc. 2008;2008:1643-6. doi: 10.1109/IEMBS.2008.4649489.

PMID:
19162992
27.

Automatic sleep detection using activity and facial electrodes.

Virkkala J, Hasan J, Velin R, Himanen SL, Värri A, Van Someren EJ.

Conf Proc IEEE Eng Med Biol Soc. 2008;2008:1639-42. doi: 10.1109/IEMBS.2008.4649488.

PMID:
19162991
28.

Periodic limb movement screening as an additional feature of Emfit sensor in sleep-disordered breathing studies.

Rauhala E, Virkkala J, Himanen SL.

J Neurosci Methods. 2009 Mar 30;178(1):157-61. doi: 10.1016/j.jneumeth.2008.11.019. Epub 2008 Dec 3.

PMID:
19100767
29.

Measurement of central mu-opioid receptor binding in vivo with PET and [11C]carfentanil: a test-retest study in healthy subjects.

Hirvonen J, Aalto S, Hagelberg N, Maksimow A, Ingman K, Oikonen V, Virkkala J, Någren K, Scheinin H.

Eur J Nucl Med Mol Imaging. 2009 Feb;36(2):275-86. doi: 10.1007/s00259-008-0935-6. Epub 2008 Sep 9.

PMID:
18779961
30.

Recovery of cognitive performance from sleep debt: do a short rest pause and a single recovery night help?

Sallinen M, Holm J, Hirvonen K, Härmä M, Koskelo J, Letonsaari M, Luukkonen R, Virkkala J, Müller K.

Chronobiol Int. 2008 Apr;25(2):279-96.

PMID:
18533327
31.

Sleep in conduct-disordered adolescents--a polysomnographic and spectral power analysis study.

Lindberg N, Tani P, Sailas E, Virkkala J, Urrila AS, Virkkunen M.

Psychiatry Res. 2008 Jun 30;159(3):339-45. doi: 10.1016/j.psychres.2007.11.021. Epub 2008 May 6.

PMID:
18462804
32.

Measurement of GABAA receptor binding in vivo with [11C]flumazenil: a test-retest study in healthy subjects.

Salmi E, Aalto S, Hirvonen J, Långsjö JW, Maksimow AT, Oikonen V, Metsähonkala L, Virkkala J, Någren K, Scheinin H.

Neuroimage. 2008 Jun;41(2):260-9. doi: 10.1016/j.neuroimage.2008.02.035. Epub 2008 Mar 4.

PMID:
18411060
33.

Detection of compressed tracheal sound patterns with large amplitude variation during sleep.

Kulkas A, Rauhala E, Huupponen E, Virkkala J, Tenhunen M, Saastamoinen A, Himanen SL.

Med Biol Eng Comput. 2008 Apr;46(4):315-21. doi: 10.1007/s11517-008-0317-z. Epub 2008 Feb 21.

PMID:
18288510
34.

FFT averaging of multichannel BCG signals from bed mattress sensor to improve estimation of heart beat interval.

Kortelainen JM, Virkkala J.

Conf Proc IEEE Eng Med Biol Soc. 2007;2007:6686-9.

PMID:
18003560
35.

Reducing the effects of electrocardiographic artifacts on electro-oculography in automatic sleep analysis.

Virkkala J, Hasan J, Värri A, Huupponen E, Himanen SL, Müller K.

Conf Proc IEEE Eng Med Biol Soc. 2007;2007:590-3.

PMID:
18002025
36.

Automatic sleep stage classification using two-channel electro-oculography.

Virkkala J, Hasan J, Värri A, Himanen SL, Müller K.

J Neurosci Methods. 2007 Oct 15;166(1):109-15. Epub 2007 Jun 28.

PMID:
17681382
37.

AutoCPAP initiation at home: optimal trial duration and cost-effectiveness.

Bachour A, Virkkala JT, Maasilta PK.

Sleep Med. 2007 Nov;8(7-8):704-10. Epub 2007 May 24.

PMID:
17531533
38.

The use of two-channel electro-oculography in automatic detection of unintentional sleep onset.

Virkkala J, Hasan J, Värri A, Himanen SL, Härmä M.

J Neurosci Methods. 2007 Jun 15;163(1):137-44. Epub 2007 Feb 12.

PMID:
17376536
39.

Automatic detection of slow wave sleep using two channel electro-oculography.

Virkkala J, Hasan J, Värri A, Himanen SL, Müller K.

J Neurosci Methods. 2007 Feb 15;160(1):171-7. Epub 2006 Sep 11.

PMID:
16965823
40.

Is Asperger syndrome associated with abnormal nocturnal motor phenomena?

Tani P, Tuisku K, Lindberg N, Virkkala J, Nieminen-von Wendt T, von Wendt L, Porkka-Heiskanen T, AppelBerg B, Lauerma H.

Psychiatry Clin Neurosci. 2006 Aug;60(4):527-8. No abstract available.

41.

Interaction of age with shift-related sleep-wakefulness, sleepiness, performance, and social life.

Bonnefond A, Härmä M, Hakola T, Sallinen M, Kandolin I, Virkkala J.

Exp Aging Res. 2006 Apr-Jun;32(2):185-208.

PMID:
16531360
42.

Anteroposterior difference in EEG sleep depth measure is reduced in apnea patients.

Huupponen E, Saastamoinen A, Joutsen A, Virkkala J, Alametsä J, Hasan J, Värri A, Himanen SL.

J Med Syst. 2005 Oct;29(5):527-38.

PMID:
16180488
43.

Automated frequency analysis of synchronous and diffuse sleep spindles.

Huupponen E, Saastamoinen A, Niemi J, Virkkala J, Hasan J, Värri A, Himanen SL.

Neuropsychobiology. 2005;51(4):256-64. Epub 2005 May 18.

PMID:
15905631
44.

Sleepiness in various shift combinations of irregular shift systems.

Sallinen M, Härmä M, Mutanen P, Ranta R, Virkkala J, Müller K.

Ind Health. 2005 Jan;43(1):114-22.

45.

The effects of sleep debt and monotonous work on sleepiness and performance during a 12-h dayshift.

Sallinen M, Härmä M, Akila R, Holm A, Luukkonen R, Mikola H, Müller K, Virkkala J.

J Sleep Res. 2004 Dec;13(4):285-94.

46.

Sleep in young adults with Asperger syndrome.

Tani P, Lindberg N, Nieminen-von Wendt T, von Wendt L, Virkkala J, Appelberg B, Porkka-Heiskanen T.

Neuropsychobiology. 2004;50(2):147-52.

PMID:
15292669
47.
48.

Occurrence of periodic sleep spindles within and across non-REM sleep episodes.

Himanen SL, Virkkala J, Huupponen E, Niemi J, Hasan J.

Neuropsychobiology. 2003;48(4):209-16.

PMID:
14673219
49.

Spindle frequency remains slow in sleep apnea patients throughout the night.

Himanen SL, Virkkala J, Huupponen E, Hasan J.

Sleep Med. 2003 May;4(3):229-34. Erratum in: Sleep Med. 2003 Jul;4(4):359. Corrected and republished in: Sleep Med. 2003 Jul;4(4):361-6.

PMID:
14592327
50.

Spindle frequency remains slow in sleep apnea patients throughout the night.

Himanen SL, Virkkala J, Huupponen E, Hasan J.

Sleep Med. 2003 Jul;4(4):361-6.

PMID:
14592314

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