Virkkala J - Search Results

1

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. Kulkas A, et al. Among authors: virkkala j. Med Biol Eng Comput. 2008 Apr;46(4):315-21. doi: 10.1007/s11517-008-0317-z. Epub 2008 Feb 21. Med Biol Eng Comput. 2008. PMID: 18288510

2

New tracheal sound feature for apnoea analysis.

Kulkas A, Huupponen E, Virkkala J, Tenhunen M, Saastamoinen A, Rauhala E, Himanen SL. Kulkas A, et al. Among authors: virkkala j. Med Biol Eng Comput. 2009 Apr;47(4):405-12. doi: 10.1007/s11517-009-0446-z. Epub 2009 Feb 11. Med Biol Eng Comput. 2009. PMID: 19205772

3

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. Kulkas A, et al. Among authors: virkkala j. Comput Biol Med. 2009 Nov;39(11):1000-5. doi: 10.1016/j.compbiomed.2009.07.014. Epub 2009 Aug 26. Comput Biol Med. 2009. PMID: 19712930

4

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. Kulkas A, et al. Among authors: virkkala j. Physiol Meas. 2010 Mar;31(3):427-38. doi: 10.1088/0967-3334/31/3/010. Epub 2010 Feb 11. Physiol Meas. 2010. PMID: 20150689

5

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

Himanen SL, Virkkala J, Huupponen E, Hasan J. Himanen SL, et al. Among authors: virkkala j. Sleep Med. 2003 Jul;4(4):361-6. doi: 10.1016/s1389-9457(03)00155-2. Sleep Med. 2003. PMID: 14592314

6

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

Himanen SL, Virkkala J, Huupponen E, Hasan J. Himanen SL, et al. Among authors: virkkala j. Sleep Med. 2003 May;4(3):229-34. doi: 10.1016/s1389-9457(02)00239-3. Sleep Med. 2003. Corrected and republished in: Sleep Med. 2003 Jul;4(4):361-6. doi: 10.1016/s1389-9457(03)00155-2 PMID: 14592327 Corrected and republished.

7

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. Huupponen E, et al. Among authors: virkkala j. J Med Syst. 2005 Oct;29(5):527-38. doi: 10.1007/s10916-005-6109-1. J Med Syst. 2005. PMID: 16180488

8

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

Rauhala E, Virkkala J, Himanen SL. Rauhala E, et al. Among authors: virkkala j. J Neurosci Methods. 2009 Mar 30;178(1):157-61. doi: 10.1016/j.jneumeth.2008.11.019. Epub 2008 Dec 3. J Neurosci Methods. 2009. PMID: 19100767

9

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

Tenhunen M, Rauhala E, Virkkala J, Polo O, Saastamoinen A, Himanen SL. Tenhunen M, et al. Among authors: virkkala j. Sleep Breath. 2011 Dec;15(4):737-46. doi: 10.1007/s11325-010-0430-8. Epub 2010 Oct 20. Sleep Breath. 2011. PMID: 20960067

10

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

Himanen SL, Virkkala J, Huupponen E, Niemi J, Hasan J. Himanen SL, et al. Among authors: virkkala j. Neuropsychobiology. 2003;48(4):209-16. doi: 10.1159/000074639. Neuropsychobiology. 2003. PMID: 14673219

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