Fig. 2

Enlarged OFF, but not ON, subfield of visual neurons in the SC of Fmr1^−/y mice. a–d Heat maps of the isolated ON (a and c) and OFF (b and d) responses to the flashing spot stimulus from the representative neurons identified in the SC of Fmr1^+/y (a and b) and Fmr1^−/y (c and d) mice. e Quantification of the average ON and OFF receptive field (RF) area. **p < 0.01, unpaired t test. f Quantification of the ON to OFF area ratio. g Quantification of the ratio of ON and OFF subfield overlap. h Quantification of the average evoked firing rate in the ON and OFF subfields. i Quantification of the ON to OFF subfield response ratio. For e–i, individual values for each identified neuron are shown, and the bar indicates the mean