Parasol cells of the hemiellipsoid body in the crayfishProcambarus clarkii: Dendritic branching patterns and functional implications

2003 ◽  
Vol 462 (2) ◽  
pp. 168-179 ◽  
Author(s):  
Mary Elizabeth McKinzie ◽  
Jeanne L. Benton ◽  
Barbara S. Beltz ◽  
DeForest Mellon
Keyword(s):  
Branching Patterns ◽  
Dendritic Branching ◽  
Functional Implications ◽  
Hemiellipsoid Body

scholarly journals Dendritic branching patterns in platforms of complex Ni-based single crystal castings

China Foundry ◽  
2019 ◽  
Vol 16 (2) ◽  
pp. 110-117
Author(s):  
Min Huang ◽  
Gong Zhang ◽  
Dong Wang ◽  
Zhi-cheng Ge ◽  
Yu-zhang Lu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Branching Patterns ◽  
Dendritic Branching

FRACTAL ANALYSIS OF PYRAMIDAL CELLS IN THE VISUAL CORTEX OF THE GALAGO (OTOLEMUR GARNETTI): REGIONAL VARIATION IN DENDRITIC BRANCHING PATTERNS BETWEEN VISUAL AREAS

Fractals ◽  
2005 ◽  
Vol 13 (02) ◽  
pp. 83-90 ◽  
Author(s):  
BRENDAN ZIETSCH ◽  
GUY N. ELSTON
Keyword(s):  
Fractal Dimension ◽  
Pyramidal Cells ◽  
Progressive Increase ◽  
Visual Area ◽  
Spectral Processing ◽  
Visual Stream ◽  
Cortical Areas ◽  
Area V2 ◽  
Branching Patterns ◽  
Dendritic Branching

Previously it has been shown that the branching pattern of pyramidal cells varies markedly between different cortical areas in simian primates. These differences are thought to influence the functional complexity of the cells. In particular, there is a progressive increase in the fractal dimension of pyramidal cells with anterior progression through cortical areas in the occipitotemporal (OT) visual stream, including the primary visual area (V1), the second visual area (V2), the dorsolateral area (DL, corresponding to the fourth visual area) and inferotemporal cortex (IT). However, there are as yet no data on the fractal dimension of these neurons in prosimian primates. Here we focused on the nocturnal prosimian galago (Otolemur garnetti). The fractal dimension (D), and aspect ratio (a measure of branching symmetry), was determined for 111 layer III pyramidal cells in V1, V2, DL and IT. We found, as in simian primates, that the fractal dimension of neurons increased with anterior progression from V1 through V2, DL, and IT. Two important conclusions can be drawn from these results: (1) the trend for increasing branching complexity with anterior progression through OT areas was likely to be present in a common primate ancestor, and (2) specialization in neuron structure more likely facilitates object recognition than spectral processing.

scholarly journals Quantitative analysis of dendritic branching pattern of large neurons in human cerebellum

2010 ◽  
Vol 67 (9) ◽  
pp. 712-716 ◽  
Author(s):  
Nebojsa Milosevic ◽  
Dusan Ristanovic ◽  
Dusica Maric ◽  
Radmila Gudovic ◽  
Bojana Krstonosic
Keyword(s):  
Quantitative Analysis ◽  
Dentate Nucleus ◽  
Morphometric Parameter ◽  
Branching Pattern ◽  
Fractal Analyses ◽  
Significant Difference ◽  
Branching Patterns ◽  
Dendritic Branching ◽  
Human Cerebellum ◽  
Large Neurons

Background/Aim. Dentate nucleus (nucleus dentatus) is the most distant of the cerebellar nuclei and the major system for information transfer in the cerebellum. So far, dendritic branches of four different kinds of large neurons of dentate nucleus, have been considered mainly qualitatively with no quantification of their morphological features. The aim of the study was to test the qualitative hypothesis that the human dentate nucleus is composed of various types of the large neurons by quantitative analysis of their dendritic branching patterns. Methods. Series of horizontal sections of the dentate nuclei were taken from 15 adult human brains, free of diagnosed neurological disorders. The 189 Golgi-impregnated images of large neurons were recorded by a digital camera connected to a light microscope. Dendritic branching patterns of digitized neuronal images were analyzed by modified Sholl and fractal analyses. Results. The number of intersections (Nm), critical radius (rc) and fractal dimension (D) of dendritic branching pattern for four types of the large neurons were calculated, statistically evaluated and analyzed. The results show that there is a significant difference between four neuronal types in one morphometric parameter at least. Conclusion. The present study is the first attempt to analyze quantitatively the dendritic branching pattern of neurons from the dentate nucleus in the human. The hypothesis that the four types of the large neurons exist in this part of human cerebellum is successfully supported.

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