Hansson E, Jarlstedt J, Sellström A
Experientia. 1980 May 15;36(5):576-7. doi: 10.1007/BF01965810.
The exogenous release of glutamate has been successfully studied in the cochlear nucleus of guinea-pigs after physiological sound stimulation of the ear (frequency 2000--20,000 Hz at 100 dBA).