conversion process and synaptic transmission of action potentials. A brief look into the

interfaces on the materials and techniques that stimulate the neurons in the brain and re­

cord the input signals has been included in the chapter as well. These interfaces (Figure 9.1)

offer a well-established system of prosthetics with sensory feedback. This chapter con­

cludes with the current and future perspectives of the interfaces.

9.2 Skin-Inspired Multifunctional Interfaces

The human skin has versatile functionalities along with its complex structure. It acts as a

physical barrier that protects the internal systems. It integrates conductibility, sensibility,

self-healing, and stretchability. Human skin inspired the researchers to develop interfaces

and robotic hands along with augmented skin for human beings as well as animals.

9.2.1 Artificial Mechanoreceptors

A variety of mechanoreceptors transduce the signals into action potentials in human

skin [1]. The slowly adapting (SA) receptors are responsible for measuring the static

forces. SA-I have high resolution, sensitivity for normal forces while SA–II responds more

evidently to the stretching in the skin. Rapid adapting of these mechanoreceptors pro­

vides vibrational sensitivity and dynamic force.

FIGURE 9.1

Interfaces bioinspired by the human body.

Bioinspired Prosthetic Interfaces

141