Fig. 7.

Responses of two different place cells recorded in dark I and dark II inactivation conditions.A, This cell showed a preferred field on the north maze arm during the initial light trials, and the preferred location changed across trials during the inactivation condition. The field did not return to the original location until the last pair of control dark trials. B, The preferred field of this cell was on the northern portion of the center platform during light trials and control dark trials. During inactivation, the field shifted to firing on two maze arms and began to return during the last inactivation trials.