PMID- 8512052
OWN - NLM
STAT- MEDLINE
DCOM- 19930712
LR  - 20161123
IS  - 0002-9483 (Print)
IS  - 0002-9483 (Linking)
VI  - 91
IP  - 1
DP  - 1993 May
TI  - Longitudinal study of cranial base shape changes in Macaca nemestrina.
PG  - 117-29
AB  - The primate cranial base (CB) represents a complex irregular structure even when 
      limited to two dimensions, making it difficult to describe quantitatively using 
      the conventional metrical approach composed of angles and distances. 
      Consequently, a curve-fitting procedure, elliptical Fourier functions (EFF), was 
      utilized, which accurately defines the form of complex two-dimensional 
      morphologies. A longitudinal Macaca nemestrina sample consisting of 14 females 
      and 15 males was utilized. Lateral headfilms, 1 to 8 years, were available (275 
      headfilms). Because the x-rays were not always taken at precise one-year 
      intervals, a number of headfilms were excluded, which reduced the sample to 181. 
      The CB boundary outline was carefully traced onto acetate sheets and 54 points 
      located. The observed points were digitized and used to compute size-standardized 
      EFF's with 20 harmonics. From each EFF, a set of 150 expected distances to the CB 
      boundary was generated using the centroid as an origin. Superimposition of the 
      CB's on the centroid also provided a detailed picture of the relative shape 
      changes with respect to that center. Statistically significant shape differences 
      were found as a function of age and sexual dimorphism. These age changes 
      consisted of a gradual anteroposterior lengthening with a concomitant narrowing 
      in the superoinferior direction. Specifically, a lengthening of the dorsal clivus 
      and an anterior migration of the hypophyseal fossa could also be discerned. Thus, 
      Fourier descriptors provide a particularly powerful method for documenting, both 
      visually and numerically, the shape changes of complex two dimensional 
      morphologies.
FAU - Lestrel, P E
AU  - Lestrel PE
AD  - Section of Orthodontics, School of Dentistry University of California, Los 
      Angeles 90024.
FAU - Bodt, A
AU  - Bodt A
FAU - Swindler, D R
AU  - Swindler DR
LA  - eng
GR  - DE-02918/DE/NIDCR NIH HHS/United States
GR  - RR-00166/RR/NCRR NIH HHS/United States
PT  - Journal Article
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - United States
TA  - Am J Phys Anthropol
JT  - American journal of physical anthropology
JID - 0400654
SB  - IM
MH  - Animals
MH  - Female
MH  - Fourier Analysis
MH  - Longitudinal Studies
MH  - Macaca nemestrina/*anatomy & histology
MH  - Male
MH  - Radiography
MH  - Skull/*anatomy & histology/diagnostic imaging
EDAT- 1993/05/01 00:00
MHDA- 1993/05/01 00:01
CRDT- 1993/05/01 00:00
PHST- 1993/05/01 00:00 [pubmed]
PHST- 1993/05/01 00:01 [medline]
PHST- 1993/05/01 00:00 [entrez]
AID - 10.1002/ajpa.1330910108 [doi]
PST - ppublish
SO  - Am J Phys Anthropol. 1993 May;91(1):117-29. doi: 10.1002/ajpa.1330910108.