1. INTRODUCTION

2. THE SEYFERT GALAXIES OF THE 12 μm GALAXY SAMPLE

3. OBSERVATIONS AND DATA REDUCTION

4. OBSERVATIONAL RESULTS

5. AGN DIAGNOSTIC DIAGRAMS: DATA AND MODELS

6. [NEV] AS INDICATOR OF AGN ACTIVITY

7. AGN STATISTICS

8. THE ACCRETION POWER IN THE LOCAL UNIVERSE

9. DISCUSSION AND CONCLUSIONS