A quantitative study of neuronal and glial numerical density in the visual cortex of the bottlenose dolphin: evidence for a specialized subarea and changes with age
- PMID: 3722447
- DOI: 10.1002/cne.902470408
A quantitative study of neuronal and glial numerical density in the visual cortex of the bottlenose dolphin: evidence for a specialized subarea and changes with age
Erratum in
- J Comp Neurol 1986 Aug 8;250(2):263
Abstract
Neuronal and glial numerical densities were measured in the lateral gyrus of the cerebral hemisphere of dolphins (Tursiops truncatus) from the neonatal period to adulthood. The cortex studied is the area known to be visually excitable in evoked potential studies. Two distinct parts of the adult lateral gyrus are identifiable, one relatively anterior, in which neuronal density is 23,000/mm3, the other more posterior, with almost double this density. In a neonate, the neuronal density in the anterior lateral gyrus was found to be more than double that of the adult. No samples from the immature posterior area were available. Glial density varies much less than neuronal density, both with age and between areas. Soon after birth the glia/neuron ratio is 1.6 in anterior lateral gyrus, rising to around 3 in the adult anterior lateral area, and rather less in the posterior region, where neuronal density is high. We speculate that the existence of a high numerical density of neurons in the posterior part of the dolphin visual cortex could perhaps indicate a specialized area corresponding to the primate primary visual cortex, also known to have high neuronal density.
Similar articles
-
Golgi and Nissl studies of the visual cortex of the bottlenose dolphin.J Comp Neurol. 1985 Oct 15;240(3):305-21. doi: 10.1002/cne.902400307. J Comp Neurol. 1985. PMID: 2415558
-
Visual cortex of the dolphin: an image analysis study.J Comp Neurol. 1988 Jul 1;273(1):3-25. doi: 10.1002/cne.902730103. J Comp Neurol. 1988. PMID: 3209729
-
A laminar analysis of the number of neurons, glia, and synapses in the adult cortex (area 17) of adult macaque monkeys.J Comp Neurol. 1982 Sep 20;210(3):278-90. doi: 10.1002/cne.902100307. J Comp Neurol. 1982. PMID: 7142443
-
The limbic lobe of the dolphin brain: a quantitative cytoarchitectonic study.J Hirnforsch. 1982;23(5):465-552. J Hirnforsch. 1982. PMID: 7161482
-
Evolution of neuronal numerical density in the developing and aging human visual cortex.Hum Neurobiol. 1987;6(1):11-8. Hum Neurobiol. 1987. PMID: 3583841
Cited by
-
Higher neuron densities in the cerebral cortex and larger cerebellums may limit dive times of delphinids compared to deep-diving toothed whales.PLoS One. 2019 Dec 16;14(12):e0226206. doi: 10.1371/journal.pone.0226206. eCollection 2019. PLoS One. 2019. PMID: 31841529 Free PMC article.
-
Age-related changes in the primary auditory cortex of newborn, adults and aging bottlenose dolphins (Tursiops truncatus) are located in the upper cortical layers.Front Neuroanat. 2024 Jan 5;17:1330384. doi: 10.3389/fnana.2023.1330384. eCollection 2023. Front Neuroanat. 2024. PMID: 38250022 Free PMC article.
-
Correlations of neuronal and microvascular densities in murine cortex revealed by direct counting and colocalization of nuclei and vessels.J Neurosci. 2009 Nov 18;29(46):14553-70. doi: 10.1523/JNEUROSCI.3287-09.2009. J Neurosci. 2009. PMID: 19923289 Free PMC article.
-
A universal scaling law between gray matter and white matter of cerebral cortex.Proc Natl Acad Sci U S A. 2000 May 9;97(10):5621-6. doi: 10.1073/pnas.090504197. Proc Natl Acad Sci U S A. 2000. PMID: 10792049 Free PMC article.
-
Cetacean sleep: an unusual form of mammalian sleep.Neurosci Biobehav Rev. 2008 Oct;32(8):1451-84. doi: 10.1016/j.neubiorev.2008.05.023. Epub 2008 May 24. Neurosci Biobehav Rev. 2008. PMID: 18602158 Free PMC article. Review.
Publication types
MeSH terms
LinkOut - more resources
Full Text Sources
