ON SOME ASPECTS OF ELECTRICAL ACTIVITY IN BIOLOGICAL SYSTEM

Abstract

The dissertation work undertaken here consists of two parts * one dealing on information transmission in certain nerve cells and the other on some control aspects of prosthesis for an upper limb.. The first part begins with the description of a model whose output function resembles the output of certain nerve cells.. Then the obvious question of modulation and possible type of demodulation processes are studied. The effect of parameter variations on the output of nerve cells has been analysed mathematically and justification is attemp-ted in the study of models in an attempt to under stand the complex systems.. Some description of synaptic physiology ha$ been included..A note on the neural discrimination of sensa-tion i. skin, has. been added. In second part the patterns of myoeiectrlc signals of different muscle-groups and the variation of myoelectric vectors on practice have been presented and their application to control the. jr osthesis has been discussed. -Certain infor-mation feedbacks to enable the prosthesis to be an extension of natural organism has been mentioned.