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Spike-based VLSI modeling of the ILD system in the echolocating bat
1Electrical and Computer Engineering Department and the Institute for Systems Research, University of Maryland, College Park MD 20742, USA. timmer@isr.umd.edu
Abstract:
The azimuthal localization of objects by echolocating bats is based on the difference of echo intensity received at the two ears, known as the interaural level difference (ILD). Mimicking the neural circuitry in the bat associated with the computation of ILD, we have constructed a spike-based VLSI model that can produce responses similar to those seen in the lateral superior olive (LSO) and some parts of the inferior colliculus (IC). We further explore some of the interesting computational consequences of the dynamics of both synapses and cellular mechanisms.