Subject: Re: High-frequency hearing in humans From: Tom Brennan <g_brennantg@xxxxxxxx> Date: Tue, 25 Jan 2011 12:33:45 -0600 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>One item that comes to mind is echo location. Research in this area is spotty but those with experience using and/or teaching echo location skills have found that high frequency hearing (12k and above) while not necessary do enhance the skill particularly in adding detail to a heard knowledge of surroundings. Tom Tom Brennan KD5VIJ, CCC-A/SLP web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html