The development of nuchal atonia associated with active (REM) sleep in fetal sheep: presence of recurrent fractal organization

被引:8
作者
Anderson, CM [1 ]
Mandell, AJ
Selz, KA
Terry, LM
Wong, CH
Robinson, SR
Robertson, SS
Smotherman, WP
机构
[1] Harvard Univ, Sch Med, Consolidated Dept Psychiat, Belmont, MA 02178 USA
[2] McLean Hosp, Dev Biophys Res Program, Belmont, MA 02178 USA
[3] Emory Univ, Sch Med, Dept Psychiat & Behav Sci, Atlanta, GA 30322 USA
[4] Florida Atlantic Univ, Coll Liberal Arts, Dept Psychol, Davie, FL USA
[5] SUNY Binghamton, Lab Perinatal Neuroethol, Binghamton, NY USA
[6] SUNY Binghamton, Ctr Dev Psychobiol, Binghamton, NY USA
[7] Univ Iowa, Dept Psychol, Iowa City, IA 52242 USA
[8] Cornell Univ, Dept Human Dev, Ithaca, NY 14853 USA
关键词
D O I
10.1016/S0006-8993(98)00008-0
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The behavioral state of active or rapid eye movement sleep (REMS) is dominant during fetal Life and may play an important role in brain development. One marker of this state in fetal sheep is neck nuchal muscle atonia (NA). We observed burst within burst NA patterns suggestive of recurrent fractal organization in continuous 13 day in utero recordings of NA during the third trimester. Consistent with fractal renewal processes, the cumulative mean and standard deviation (SD) diverged over this time and the tail of NA distributions fit a stable Levy law with exponents that remained invariant over the periods of development examined. The Hurst exponent, a measure of self-affine fractals, indicated that long-range correlations among NA intervals were present throughout development. A conserved complex fractal structure is apparent in NA which may help elucidate ambiguities in defining fetal states as well as some unique properties of fetal REMS. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:351 / 357
页数:7
相关论文
共 33 条
[1]  
ANDERSON CM, 1995, FRACTAL BEHAV SPONTA
[2]  
Anderson J, 1996, WILD ENVIRON MED, V7, P75, DOI 10.1580/1080-6032(1996)007[0075:LTTE]2.3.CO
[3]  
2
[4]  
BASSINGTHWAIGHT.JB, 1994, FRACTAL PHYSL
[5]   EVALUATING RESCALED RANGE ANALYSIS FOR TIME-SERIES [J].
BASSINGTHWAIGHTE, JB ;
RAYMOND, GM .
ANNALS OF BIOMEDICAL ENGINEERING, 1994, 22 (04) :432-444
[6]   CROSSOVER IN RESCALED-RANGE ANALYSIS AND POWER SPECTRA - MEASUREMENTS AND SIMULATIONS [J].
BERGE, LI ;
RAKOTOMALALA, N ;
FEDER, J ;
JOSSANG, T .
PHYSICAL REVIEW E, 1994, 50 (03) :1978-1984
[7]   DUAL MECHANISMS OF TWITCHING DURING SLEEP IN NEONATAL RATS [J].
BLUMBERG, MS ;
LUCAS, DE .
BEHAVIORAL NEUROSCIENCE, 1994, 108 (06) :1196-1202
[8]  
BLUMBERG MS, 1996, DEV PSYCHOBIOL, V25, P1
[9]   THE ATONIA AND MYOCLONIA OF ACTIVE (REM) SLEEP [J].
CHASE, MH ;
MORALES, FR .
ANNUAL REVIEW OF PSYCHOLOGY, 1990, 41 :557-584
[10]   CHANGES IN BREATHING, ELECTROCORTICAL AND MUSCLE-ACTIVITY IN UNANESTHETIZED FETAL LAMBS WITH AGE [J].
CLEWLOW, F ;
DAWES, GS ;
JOHNSTON, BM ;
WALKER, DW .
JOURNAL OF PHYSIOLOGY-LONDON, 1983, 341 (AUG) :463-476