Figure 5.

Reversible inactivation of LHb induces spatial recognition deficits. (a) Representation of the spatial recognition test used and adapted from Galani et al (1998). (b) During session 7, whereas control rats spent significantly more time sniffing the ‘new location' object (*p<0.01 vs ‘substituted' and ‘undisplaced'), Musc-treated rats spent an equivalent amount of time sniffing the three objects. (c) The recognition index showed that Musc-treated rats performed significantly worse than control rats during session 7 (*p<0.01 vs Musc-treated rats; #p<0.05 vs chance level, ie, 0.66). (d) In addition, when LHb and dHPC field potentials are simultaneously recorded during the test, their coherence during session 7 is linearly correlated with performance.