Anatomy of the Cortex: Statistics and Geometry by Prof. Dr. Valentino Braitenberg, Priv. Doz. Dr. Almut Schüz

By Prof. Dr. Valentino Braitenberg, Priv. Doz. Dr. Almut Schüz (auth.)

Show description

Read or Download Anatomy of the Cortex: Statistics and Geometry PDF

Best anatomy books

The Handy Anatomy Answer Book (The Handy Answer Book Series)

This convenient resolution ebook is helping a lay individual be aware of extra approximately Anatomy. additionally very colourful illustrations to aid out understand what's what and the place it really is positioned.

Introduction to mathematical methods in bioinformatics

This e-book appears to be like on the mathematical foundations of the types at the moment in use. All latest books on bioinformatics are software-orientated and so they pay attention to desktop implementations of mathematical types of biology. This e-book is exclusive within the experience that it seems to be on the mathematical foundations of the types, that are the most important for proper interpretation of the outputs of the types.

An Introduction to Medical Science: A Comprehensive Guide to Anatomy, Biochemistry and Physiology

This can be a ebook for newbies. i've got attempted to write down a textual content that now not voice their lawsuits in specific anatomical, biochemical will be worthy to scholars of numerous backgrounds who're or physiolq,gical phrases. it'd be an strange sufferer who beginning easy technology reports in guidance for paintings in a single complains that anything is inaccurate together with his or her DNA of the various healthiness fields.

Extra resources for Anatomy of the Cortex: Statistics and Geometry

Sample text

16). If we distinguish a number of distinct neuron types, we may measure the axonal length for each type separately. Knowing (or estimating) the relative frequency of each type, we can calculate the total axonal density in the tissue. In our first effort (Braitenberg 1978b) this took the form of a rough estimate, I or 2 km of axons per mm3 . The other method we used to assess the total axonal length in a unit volume ("axonal density") was based on electron micrographs. On these it is possible to recognize the fragments of axons among those of dendrites, glia and other tissue components.

Lm in the case of the collateral, which was followed for the longest distance (Fig. 21 below). Lm. This value was much lower than expected, but probably does not represent the true average over the whole axonal tree. Lm) on their more distal segments, which make up most of the total axonal length belonging to the neuron. Lm. The most interesting finding in this tedious analysis was the one which actually discouraged us from carrying it any further. It became clear in the reconstruction of the axon collaterals from serial electron micrographs that most of the synapses were located on swellings of the axon which had previously been recognized on the Golgi picture and which were also quite apparent on the electron micrographs.

The Golgistained cell was photographed and drawn with the camera Iucida (Fig. 21, above); care was taken to capture every kink of the collaterals in order to facilitate the comparison of the electron microscopy with the light microscopic picture. On the serial electron micrographs which were then made, the axon of the stained cell with its synapses was easily recognized. Lm of its collaterals were also surveyed for synapses. The initial segment of the axon carried 12 synapses in which it functioned as the postsynaptic element.

Download PDF sample

Rated 4.61 of 5 – based on 32 votes