[Morphometric development and the variability of neurons of the human auditory system: ventral cochlear nucleus and superior medial olivary nucleus].
The development of the human ventral cochlear and medial superior olivary nuclei was studied. We made serial sections of the brain in 10 fetuses at 16-40 weeks of gestation (WG), an infant at 2 months of age and an adult of 63 years using an electronic planimeter with a computer. Although the shape of neurons of the two nuclei was different, our morphometric analysis showed that the development of both of them accelerates between 18 and 21 WG in terms of the columnar length and volume, neuronal size and circularity ratio and the amount of Nissl bodies increases gradually.
Nara
T
T
Division of Neurology, Saitama Children's Medical Center, Iwatsuki.
Goto
N
N
Hamano
S
S
D017626:Cochlear Nucleus / Q000166:cytology / Q000196:embryology* / Q000254:growth & development; D005865:Gestational Age; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008875:Middle Aged; D009474:Neurons / Q000166:cytology*; D019581:Neuropil; D009847:Olivary Nucleus / Q000166:cytology / Q000196:embryology* / Q000254:growth & development