Figure1.

Experimental setup. A. Cannulae placement. Cannulae were aimed at the middle of the olfactory bulb in such a manner that drug infusions cover a maximal bulbar area. B. Behavioral setup for discrimination experiments. Rats were trained in a modified rat cage separated into two chambers by an opaque sliding door. C. Behavioral paradigm for odor detection testing. Rats were presented with the carrier, mineral oil, during four trials separated by five minute intertrial intervals, followed by a single presentation of a test odor.