What does the principle of dynamic connectional specificity mean?

What does the principle of dynamic connectional specificity mean?

– Principle of dynamic polarization: Information flows in a predictable and consistent direction in each neuron. – Principle of connectional specificity: neurons make specific connections at precise points of synaptic contact.

What did Golgi and Cajal disagree about?

Camillo Golgi and Santiago Ramon y Cajal shared the Nobel Prize in 1906 for their work on the histology of the nerve cell, but both held diametrically opposed views about the Neuron Doctrine which emphasizes the structural, functional and developmental singularity of the nerve cell.

What is neuron theory of waldeyer?

Vilhelm von Waldeyer in 1891 proposed to call the unit ‘neuron’ from the Greek word for ‘sinew’. The ‘neuron theory’ or ‘neuron doctrine’, which emerged at the end of the 19th century, asserts that nerve tissue is composed of individual cells, which are genetic, anatomic, functional and trophic units.

What is neuron doctrine hypothesis in brain science?

The neuron doctrine is the universally accepted concept that the nervous system is made up of discrete individual cells, the neurons, supported by astrocytes and by other glial cells. This discovery was due to the brilliant neuroanatomical work of Santiago Ramón y Cajal (Finger, 2000).

What tissues is the brain made up of?

Brain tissue is composed of neuronal, glial and endothelial cells, and although there must be biological rules that determine the numbers of cells of each subtype and the volumes (or masses) occupied by them, little is known about such rules, if they indeed exist.

Who discovered the brain of the cell?

The neuron doctrine is the concept that the nervous system is made up of discrete individual cells, a discovery due to decisive neuro-anatomical work of Santiago Ramón y Cajal and later presented by, among others, H. Waldeyer-Hartz.

What is nerve net theory?

A nerve net consists of interconnected neurons lacking a brain or any form of cephalization. The nerve net is the simplest form of a nervous system found in multicellular organisms. Unlike central nervous systems, where neurons are typically grouped together, neurons found in nerve nets are spread apart.

Who won the Nobel Prize in 1906 for his neuron doctrine?

Golgi received the highest honours and awards in recognition of his work. He shared the Nobel Prize for 1906 with Santiago Ramón y Cajal for their work on the structure of the nervous system.