Figure 7.

Comparison between A1 and V1. A, Metabotropic glutamate receptor activation also reduces evoked responses in cells of layers 2/3 in A1.Graph shows comparable effects of ACPD on direct photostimulation of cells in layers 2/3 of both V1 and A1 while in a low Ca²⁺ and high Mg²⁺ bath medium. Amplitudes are normalized to the mean of the base line values. ACPD strongly decreases the EPSCs amplitude in both areas (p < 0.001 on a t test). B, Comparison between V1 and A1 of the effects of the modulation protocol for inputs from layer 4 to layers 2/3. The normalized amplitudes of the first two EPSCs are shown. No relevant difference is present comparing the two areas (p > 0.1 on a t test).