For more than 30 years, San Diego Instruments has served the scientific community as a comprehensive resource for the design, manufacture and distribution of behavioral neuroscience research instruments used in human and animal studies. Utilized in laboratories and cited in research papers worldwide, SDI systems have come to represent the industry standard for quality and longevity. Our premier SR-LAB™ is the world’s most widely used startle response system. At SDI, our commitment to developing quality products that stand the test of time is matched only our dedication to excellent customer service.