EXCITATION EFFECTS ON LSO UNIT SUSTAINED RESPONSES - POINT PROCESS CHARACTERIZATION

Citation
M. Zacksenhouse et al., EXCITATION EFFECTS ON LSO UNIT SUSTAINED RESPONSES - POINT PROCESS CHARACTERIZATION, Hearing research, 68(2), 1993, pp. 202-216
Citations number
17
Categorie Soggetti
Neurosciences,Acoustics
Journal title
ISSN journal
03785955
Volume
68
Issue
2
Year of publication
1993
Pages
202 - 216
Database
ISI
SICI code
0378-5955(1993)68:2<202:EEOLUS>2.0.ZU;2-G
Abstract
LSO units recover from a spike discharge in a characteristic way, mode led by an intrinsic recovery function that is stimulus invariant up to a scaling factor and a shifting constant. Data analysis shows that th e effect of increasing excitatory stimulus level can be described by a mplifying the intrinsic recovery function and by shifting it toward sh orter intervals. The shifting process secondarily interacts with the a bsolute deadtime to produce the response characteristics of the three LSO unit types. Decreased excitation is clearly distinguished from inh ibition, which affects the scaling, but not the time origin, of the re covery. We conclude that both excitatory and inhibitory stimulus level s are encoded in the timing of LSO unit discharges.