1) TASK: TO IDENTIFY THE SOUND SOURCE

2) THE PROBLEM: ONE RECEPTOR SURFACE

3) THE GENERAL SCHEME:

A) TRANSDUCTION TO A NEURAL CODE
B) PROCESS AND INTEGRATE
C) PERCEIVE AND RESPOND

4) THE BASIC ATTRIBUTES OF SIGNALS:

A) FREQUENCY
B) INTENSITY
C) TIME (PHASE, AMPLITUDE MODULATION)

5) A QUICK HISTORY

GREEKS (500BC); 18 TH CENTURY - BIOLOGY AND MICROSCOPY; HELMHOLTZ; FECHNER; RAYLEIGH; 20 TH CENTURY - TELEPHONES; OSCILLOSCOPES; COMPUTERS; MOLECULAR BIOLOGY

6) PROFESSIONAL TASKS

MEDICINE (OTOLARYNGOLOGY); CLINICAL AUDIOLOGY; HEARING SCIENTISTS: PSYCHOLOGISTS, NEUROSCIENTISTS, & BIOLOGISTS, PHYSIOLOGISTS, PHYSICISTS (ETCETERA)