Functional neuronavigation allows intraoperative visualization of cortical eloquent brain areas. Major white matter tracts, such as the pyramidal tract, can be delineated by diffusion-tensor-imaging based fiber tracking. These tractography data were integrated into 3-D datasets applied for neuronavigation by rigid registration of the diffusion images with standard anatomical image data so that ...

The main issue in any image zooming techniques is to preserve the structure of the zoomed image. The zoomed image may suffer from the discontinuities in the soft regions and edges; it may contain artifacts, such as image blurring and blocky, and staircase effects. This paper presents a novel image zooming technique using Partial Differential Equations (PDEs). It combines a non-linear Fourth-ord...

AIM To investigate the effects of phenytoin (DPH) on morphological and structural changes of pyramidal neurons in hippocampal CA3 of rats induced by chronic stress. METHODS Using Nissl staining, Golgi staining, and electron microscope, the morphology and structure of pyramidal neurons in hippocampal CA3 of rats were observed. RESULTS Chronic stress resulted in loss of hippocampal CA3 pyrami...

The characterization of the structural design of cortical microcircuits is essential for understanding how they contribute to function in both health and disease. Since pyramidal neurons represent the most abundant neuronal type and their dendritic spines constitute the major postsynaptic elements of cortical excitatory synapses, our understanding of the synaptic organization of the neocortex l...

We present an overview of the design and test of an image processing procedure for detecting all important anatomical structures in color fundus images. These structures are the optic disk, the macula and the retinal network. The algorithm proceeds through five main steps: (1) automatic mask generation using pixels value statistics and color threshold, (2) visual image quality assessment using ...

Pyramidal cells are the most abundant type of neurons in the cerebral cortex. Their activity has been associated with higher cognitive and emotional functions. Pyramidal cells have a characteristic structure, consisting of a triangularly shaped soma where from two complex dendritic trees and a long bifurcated axon extend. All the morphological components of the pyramidal neurons exhibit signifi...

The study was carried out to evaluate the neuropathological effect of sodium fluoride in hippocampus of albino rat. Healthy albino rats of Wistar strain weighing 100-200 g were divided in four groups. Group I was given 1 ml double distilled deionized water/kg body weight/day for forty days and kept as control. The remaining groups II, III and IV were treated with 100, 200 and 300 ppm of sodium ...

I present a theory of the optimal capital structure and dividend policy for family business groups expanding in countries where the private control benefit is substantial and the market for corporate control is active. Here, issuing debt overcomes the limited dilution capacity of equity, but reduces the expected control benefit by increasing the probability of default. When family business grou...

Deep-learning methods, especially convolutional neural networks (CNN), have become the first choice for hyperspectral image (HSI) classification to date. It is a common procedure that small cubes are cropped from images and then fed into CNNs. However, standard CNNs find it difficult extract discriminative spectral–spatial features. How obtain finer features improve performance now hot topic of...