Results 121 to 130 of about 1,604 (164)
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Journal of Neuroscience Methods, 1988
The numerical density of synapses in the molecular layer of the parietal cortex of normal 28-day-old rats has been estimated by using two stereological methods, namely an unfolding technique and the disector method. For the unfolding technique it was assumed that the synapses formed a polydispersed population of disc-shaped particles.
K S Bedi, D G Jones, K S Bedi
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The numerical density of synapses in the molecular layer of the parietal cortex of normal 28-day-old rats has been estimated by using two stereological methods, namely an unfolding technique and the disector method. For the unfolding technique it was assumed that the synapses formed a polydispersed population of disc-shaped particles.
K S Bedi, D G Jones, K S Bedi
exaly +3 more sources
Journal of Microscopy, 1988
SUMMARYUnbiased estimates of the total number of neurons and glial cells from central regions of grey matter in human brains are obtained using the disector principle in modifications which are unaffected by the histological processing of paraffin‐embedded tissue. Section thickness does not enter into the estimator and need not be known. An analysis of
Bente Pakkenberg, H J G Gundersen
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SUMMARYUnbiased estimates of the total number of neurons and glial cells from central regions of grey matter in human brains are obtained using the disector principle in modifications which are unaffected by the histological processing of paraffin‐embedded tissue. Section thickness does not enter into the estimator and need not be known. An analysis of
Bente Pakkenberg, H J G Gundersen
exaly +3 more sources
Journal of Microscopy, 1992
SUMMARYA double‐disector method for obtaining estimates of the number of particles inside other particles, illustrated by an estimation of the average cell number in a glomerulus, has been developed. The method is suitable for paraffin‐embedded tissue because it does not require knowledge about the section thickness.
Niels Marcussen
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SUMMARYA double‐disector method for obtaining estimates of the number of particles inside other particles, illustrated by an estimation of the average cell number in a glomerulus, has been developed. The method is suitable for paraffin‐embedded tissue because it does not require knowledge about the section thickness.
Niels Marcussen
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Journal of Microscopy, 1993
SummaryA simple modification of the physical disector is presented, which is used to count the number of neurons in the hypoglossal nucleus of the rat in a series of paraffin sections. One disector consists of two adjacent sections (6 μm thick) that have been Nissl‐stained with cresyl fast violet.
Orlando Guntinas-Lichius +2 more
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SummaryA simple modification of the physical disector is presented, which is used to count the number of neurons in the hypoglossal nucleus of the rat in a series of paraffin sections. One disector consists of two adjacent sections (6 μm thick) that have been Nissl‐stained with cresyl fast violet.
Orlando Guntinas-Lichius +2 more
exaly +3 more sources
Estimation of the section thickness and optical disector height with a simple calibration method
Journal of Microscopy, 1997The distance between the upper and lower surfaces of a section (i.e. the section thickness) can be measured with a microcator or a shaft encoder. In the present report, an alternative simple method is described for estimating the section thickness where such equipment is not available.
Levent Tümkaya
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Journal of the Neurological Sciences, 1997
Previous studies based on single sections have suggested a significant correlation between pigmented neuronal loss in the substantia nigra (SN) and clinical features in Parkinson's disease (PD). However, disector (DS) counts-unbiased and accurate stereological estimates have not been available.
M Röyttä, Juha O Rinne, Urpo K Rinne
exaly +3 more sources
Previous studies based on single sections have suggested a significant correlation between pigmented neuronal loss in the substantia nigra (SN) and clinical features in Parkinson's disease (PD). However, disector (DS) counts-unbiased and accurate stereological estimates have not been available.
M Röyttä, Juha O Rinne, Urpo K Rinne
exaly +3 more sources
A disector-based framework for the automatic optical fractionator
Journal of Chemical Neuroanatomy, 2022Stereology-based methods provide the current state-of-the-art approaches for accurate quantification of numbers and other morphometric parameters of biological objects in stained tissue sections. The advent of artificial intelligence (AI)-based deep learning (DL) offers the possibility of improving throughput by automating the collection of stereology ...
Palak Dave +6 more
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The Disector Counting Technique
NeuroQuantology, 2011Number of particles in an organ or region is a valuable data as well as the volume. Many techniques have been developed for the estimation of total number or numerical density of cells in tissues and organs. The quality and reliability of each method has constantly been increased compared to its predecessors.
ÖNGER, MEHMET EMİN +5 more
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The first decade of the disector
Proceedings, annual meeting, Electron Microscopy Society of America, 1993Nine years and eleven months ago the disector was described: a complete rule for uniform sampling of 3D structures strictly according to cardinality – and from sections, physical or just imaging planes.Intuitively, the simplest situation is when particlenumber is wanted: with a uniform sample one just counts the number Q−in the sample and estimate ...
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Efficient estimation of cell volume and number using the nucleator and the disector
Journal of Microscopy, 1990SUMMARYThe nucleator allows the unbiased estimation of absolute structural quantities of suitably sampled, arbitrarily shaped structures from observations made from arbitrary points using isotropic probes. A number of time‐saving modifications using the nucleator and the consequences of the modifications are studied in terms of their bias and ...
A, Møller, P, Strange, H J, Gundersen
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