Preface

When a person exercises, motor functions such as muscle strength and range of joint motion as well as somatosensory functions that enable the exercise are required. Somatosensory function is very important, especially when performing fine movements.

This book *Somatosensory and Motor Research* is divided into three sections: "Somatosensory Research," "Motor Research," and "Relationship between Somatosensory and Motor Research."

In the first section, "Somatosensory Research," chapters provide information on anatomy and physiology as a basis for explaining how to treat sensory disorders. In the second section, "Motor Research," chapters examine the relationship between the evaluation of F-wave, an index of excitability of spinal cord horn cells involved in motor function, and motor function. In the final section, "Relationship between Somatosensory and Motor Research," chapters address the effects of somatic sensation on standing function.

We would like to thank all the authors who contributed to this volume. They are all great researchers, and many are involved in rehabilitation. As such, I am convinced that this book will revolutionize the field of physical rehabilitation.

We would also like to thank Ms. Rebekah Pribetic, Author Service Manager at IntechOpen, for her help in the publication of this book.

**II**

**Section 3**

*by Hitoshi Asai*

Relationship between Somatosensory and Motor Research **117**

**Chapter 8 119**

Functional Role of the Somatosensory Information to Perceive

the Standing Position in the Anteroposterior Direction

**Suzuki Toshiaki, PT, DMSc** Professor, Graduate School of Kansai University of Health Sciences, Osaka, Japan

**1**

Section 1

Somatosensory Research

## Section 1
