Lower number of K-complexes and K-alphas in sleep bruxism: a controlled quantitative study
Although patients with sleep bruxism (SB) show a higher incidence of rhythmic masticatory muscle activity (RMMA) during sleep than matched normal controls, they are good sleepers. Sleep macrostructure (e.g. total sleep time, sleep latency, number of awakenings or sleep stage shifts and sleep stage d...
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| Veröffentlicht in: | Clinical neurophysiology 2002-05, Vol.113 (5), p.686-693 |
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| creator | LAVIGNE, G. J ROMPRE, P. H GUITARD, F SESSLE, B. J KATO, T MONTPLAISIR, J. Y |
| description | Although patients with sleep bruxism (SB) show a higher incidence of rhythmic masticatory muscle activity (RMMA) during sleep than matched normal controls, they are good sleepers. Sleep macrostructure (e.g. total sleep time, sleep latency, number of awakenings or sleep stage shifts and sleep stage duration) is similar between groups. Differences in sleep microstructure between SB patients and normals have been investigated only in few studies. The aim of the present study was to quantify number of microarousals, K-complexes, K-alphas, EEG spindles, and the density of slow wave activity, in both groups, in order to better understand the pathophysiology of SB.
Ten normal sleepers were matched for age and gender with 10 patients who exhibited frequent tooth-grinding during sleep. Using quantitative polysomnographic measures, we compared the above-mentioned sleep variables in both groups. Data are presented as indices for total sleep and for consecutive non-rapid eye movement (non-REM) episodes over non-REM to rapid eye movement (REM) cycles and per hour of sleep.
SB patients showed 6 times more RMMA episodes per hour of sleep than normals (P |
| doi_str_mv | 10.1016/s1388-2457(02)00037-8 |
| format | Article |
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Ten normal sleepers were matched for age and gender with 10 patients who exhibited frequent tooth-grinding during sleep. Using quantitative polysomnographic measures, we compared the above-mentioned sleep variables in both groups. Data are presented as indices for total sleep and for consecutive non-rapid eye movement (non-REM) episodes over non-REM to rapid eye movement (REM) cycles and per hour of sleep.
SB patients showed 6 times more RMMA episodes per hour of sleep than normals (P<0.001), with a higher frequency in the second and third non-REM to REM cycles. SB patients presented 42.7% fewer K-complexes per hour of stage 2 sleep, but only normals showed a decline from the first to fourth non-REM episode. Only 24% of SB-RMMA episodes were associated with K-complexes in 60 s. The number of K-alphas was 61% lower in SB patients, no change across non-REM episodes was noted. While no difference in electroencephalographic (EEG) spindles or slow wave activity (SWA) was observed between groups, EEG spindles increased and SWA decreased linearly over consecutive non-REM to REM cycles.
According to our observations, good sleep in SB patients is characterized by a low incidence of K-complexes or K-alphas and by the absence of any difference in other sleep microstructure variables or SWA.</description><identifier>ISSN: 1388-2457</identifier><identifier>EISSN: 1872-8952</identifier><identifier>DOI: 10.1016/s1388-2457(02)00037-8</identifier><identifier>PMID: 11976048</identifier><language>eng</language><publisher>Shannon: Elsevier Science</publisher><subject>Adult ; Arousal - physiology ; Biological and medical sciences ; Electroencephalography ; Female ; Fundamental and applied biological sciences. Psychology ; Humans ; Male ; Mastication ; Polysomnography ; Sleep - physiology ; Sleep Bruxism - diagnosis ; Sleep Bruxism - physiopathology ; Sleep, REM - physiology ; Sleep. Vigilance ; Vertebrates: nervous system and sense organs</subject><ispartof>Clinical neurophysiology, 2002-05, Vol.113 (5), p.686-693</ispartof><rights>2002 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c401t-37e42e97926510e46a770516dbf1af43cc720c78d204558f2943ee659f5b74eb3</citedby><cites>FETCH-LOGICAL-c401t-37e42e97926510e46a770516dbf1af43cc720c78d204558f2943ee659f5b74eb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=13638956$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11976048$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>LAVIGNE, G. J</creatorcontrib><creatorcontrib>ROMPRE, P. H</creatorcontrib><creatorcontrib>GUITARD, F</creatorcontrib><creatorcontrib>SESSLE, B. J</creatorcontrib><creatorcontrib>KATO, T</creatorcontrib><creatorcontrib>MONTPLAISIR, J. Y</creatorcontrib><title>Lower number of K-complexes and K-alphas in sleep bruxism: a controlled quantitative study</title><title>Clinical neurophysiology</title><addtitle>Clin Neurophysiol</addtitle><description>Although patients with sleep bruxism (SB) show a higher incidence of rhythmic masticatory muscle activity (RMMA) during sleep than matched normal controls, they are good sleepers. Sleep macrostructure (e.g. total sleep time, sleep latency, number of awakenings or sleep stage shifts and sleep stage duration) is similar between groups. Differences in sleep microstructure between SB patients and normals have been investigated only in few studies. The aim of the present study was to quantify number of microarousals, K-complexes, K-alphas, EEG spindles, and the density of slow wave activity, in both groups, in order to better understand the pathophysiology of SB.
Ten normal sleepers were matched for age and gender with 10 patients who exhibited frequent tooth-grinding during sleep. Using quantitative polysomnographic measures, we compared the above-mentioned sleep variables in both groups. Data are presented as indices for total sleep and for consecutive non-rapid eye movement (non-REM) episodes over non-REM to rapid eye movement (REM) cycles and per hour of sleep.
SB patients showed 6 times more RMMA episodes per hour of sleep than normals (P<0.001), with a higher frequency in the second and third non-REM to REM cycles. SB patients presented 42.7% fewer K-complexes per hour of stage 2 sleep, but only normals showed a decline from the first to fourth non-REM episode. Only 24% of SB-RMMA episodes were associated with K-complexes in 60 s. The number of K-alphas was 61% lower in SB patients, no change across non-REM episodes was noted. While no difference in electroencephalographic (EEG) spindles or slow wave activity (SWA) was observed between groups, EEG spindles increased and SWA decreased linearly over consecutive non-REM to REM cycles.
According to our observations, good sleep in SB patients is characterized by a low incidence of K-complexes or K-alphas and by the absence of any difference in other sleep microstructure variables or SWA.</description><subject>Adult</subject><subject>Arousal - physiology</subject><subject>Biological and medical sciences</subject><subject>Electroencephalography</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Male</subject><subject>Mastication</subject><subject>Polysomnography</subject><subject>Sleep - physiology</subject><subject>Sleep Bruxism - diagnosis</subject><subject>Sleep Bruxism - physiopathology</subject><subject>Sleep, REM - physiology</subject><subject>Sleep. Vigilance</subject><subject>Vertebrates: nervous system and sense organs</subject><issn>1388-2457</issn><issn>1872-8952</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkctKxTAQhoMo3h9ByUbRRTX3pO5EvOEBF-rGTUjTKVbSi0mrnre3R4-c1czA98_ANwgdUHJGCVXniXJjMiakPiHslBDCdWbW0DY1mmUml2x96v-RLbST0vsEaSLYJtqiNNeKCLONXmfdF0Tcjk0xla7CD5nvmj7ANyTs2nKaXejfXMJ1i1MA6HERx-86NRfYYd-1Q-xCgBJ_jK4d6sEN9SfgNIzlfA9tVC4k2F_WXfRyc_18dZfNHm_vry5nmReEDhnXIBjkOmdKUgJCOa2JpKosKuoqwb3XjHhtSkaElKZiueAASuaVLLSAgu-i47-9few-RkiDberkIQTXQjcmq6liSnMxgfIP9LFLKUJl-1g3Ls4tJXYh1T4tjNmFMUuY_ZVqzZQ7XB4YiwbKVWppcQKOloBL3oUqutbXacVxxaePKP4DlTB_EQ</recordid><startdate>20020501</startdate><enddate>20020501</enddate><creator>LAVIGNE, G. J</creator><creator>ROMPRE, P. H</creator><creator>GUITARD, F</creator><creator>SESSLE, B. J</creator><creator>KATO, T</creator><creator>MONTPLAISIR, J. 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Psychology</topic><topic>Humans</topic><topic>Male</topic><topic>Mastication</topic><topic>Polysomnography</topic><topic>Sleep - physiology</topic><topic>Sleep Bruxism - diagnosis</topic><topic>Sleep Bruxism - physiopathology</topic><topic>Sleep, REM - physiology</topic><topic>Sleep. Vigilance</topic><topic>Vertebrates: nervous system and sense organs</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>LAVIGNE, G. J</creatorcontrib><creatorcontrib>ROMPRE, P. H</creatorcontrib><creatorcontrib>GUITARD, F</creatorcontrib><creatorcontrib>SESSLE, B. J</creatorcontrib><creatorcontrib>KATO, T</creatorcontrib><creatorcontrib>MONTPLAISIR, J. Y</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Clinical neurophysiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>LAVIGNE, G. J</au><au>ROMPRE, P. H</au><au>GUITARD, F</au><au>SESSLE, B. J</au><au>KATO, T</au><au>MONTPLAISIR, J. Y</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Lower number of K-complexes and K-alphas in sleep bruxism: a controlled quantitative study</atitle><jtitle>Clinical neurophysiology</jtitle><addtitle>Clin Neurophysiol</addtitle><date>2002-05-01</date><risdate>2002</risdate><volume>113</volume><issue>5</issue><spage>686</spage><epage>693</epage><pages>686-693</pages><issn>1388-2457</issn><eissn>1872-8952</eissn><abstract>Although patients with sleep bruxism (SB) show a higher incidence of rhythmic masticatory muscle activity (RMMA) during sleep than matched normal controls, they are good sleepers. Sleep macrostructure (e.g. total sleep time, sleep latency, number of awakenings or sleep stage shifts and sleep stage duration) is similar between groups. Differences in sleep microstructure between SB patients and normals have been investigated only in few studies. The aim of the present study was to quantify number of microarousals, K-complexes, K-alphas, EEG spindles, and the density of slow wave activity, in both groups, in order to better understand the pathophysiology of SB.
Ten normal sleepers were matched for age and gender with 10 patients who exhibited frequent tooth-grinding during sleep. Using quantitative polysomnographic measures, we compared the above-mentioned sleep variables in both groups. Data are presented as indices for total sleep and for consecutive non-rapid eye movement (non-REM) episodes over non-REM to rapid eye movement (REM) cycles and per hour of sleep.
SB patients showed 6 times more RMMA episodes per hour of sleep than normals (P<0.001), with a higher frequency in the second and third non-REM to REM cycles. SB patients presented 42.7% fewer K-complexes per hour of stage 2 sleep, but only normals showed a decline from the first to fourth non-REM episode. Only 24% of SB-RMMA episodes were associated with K-complexes in 60 s. The number of K-alphas was 61% lower in SB patients, no change across non-REM episodes was noted. While no difference in electroencephalographic (EEG) spindles or slow wave activity (SWA) was observed between groups, EEG spindles increased and SWA decreased linearly over consecutive non-REM to REM cycles.
According to our observations, good sleep in SB patients is characterized by a low incidence of K-complexes or K-alphas and by the absence of any difference in other sleep microstructure variables or SWA.</abstract><cop>Shannon</cop><pub>Elsevier Science</pub><pmid>11976048</pmid><doi>10.1016/s1388-2457(02)00037-8</doi><tpages>8</tpages></addata></record> |
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| subjects | Adult Arousal - physiology Biological and medical sciences Electroencephalography Female Fundamental and applied biological sciences. Psychology Humans Male Mastication Polysomnography Sleep - physiology Sleep Bruxism - diagnosis Sleep Bruxism - physiopathology Sleep, REM - physiology Sleep. Vigilance Vertebrates: nervous system and sense organs |
| title | Lower number of K-complexes and K-alphas in sleep bruxism: a controlled quantitative study |
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