PT - JOURNAL ARTICLE AU - Parabucki, Ana AU - Lampl, Ilan TI - Coupling of tactile LFP signals between mouse cortex and olfactory bulb AID - 10.1101/144279 DP - 2017 Jan 01 TA - bioRxiv PG - 144279 4099 - http://biorxiv.org/content/early/2017/05/31/144279.short 4100 - http://biorxiv.org/content/early/2017/05/31/144279.full AB - Local field potentials are an important measure of brain activity and have been used to address various mechanistic and behavioral questions. We revealed a prominent whisker evoked local field potential signal in the olfactory bulb and investigated its physiology. This signal, dependent on barrel cortex activation and highly correlated with its local activity, represented a pure volume conductance signal that was sourced back to the activity in the ventro-lateral orbitofrontal cortex, located a few millimeters away. Thus, we suggest that special care should be taken when acquiring and interpreting LFP data.