Leibold, Christian; Kempter, Richard; Hemmen, Jan Leo van
(10. December 2001):
Temporal Map Formation in the Barn Owl’s Brain.
In: Physical Review Letters, Vol. 87, No. 24: p. 248101
Barn owls provide an experimentally well-specified example of a temporal map, a neuronal representation
of the outside world in the brain by means of time. Their laminar nucleus exhibits a place
code of interaural time differences, a cue which is used to determine the azimuthal location of a sound
stimulus, e.g., prey. We analyze a model of synaptic plasticity that explains the formation of such a
representation in the young bird and show how in a large parameter regime a combination of local and
nonlocal synaptic plasticity yields the temporal map as found experimentally. Our analysis includes the
effect of nonlinearities as well as the influence of neuronal noise.