en Cellular and molecular Neuroscience Cellular and molecular Neuroscience Original Original <p align="left" ><p><font color="#221e1f" size="2"><font color="#221e1f" size="2">Previous evidence has shown that the number of L and M cones in retina varies </font></font><font color="#221e1f" face="Times New Roman,Times New Roman" size="2"><font color="#221e1f" face="Times New Roman,Times New Roman" size="2"><font color="#221e1f" face="Times New Roman,Times New Roman" size="2">significantly between subjects. However, it is not clear how the variation of L/M </font></font></font><font color="#221e1f" size="2"><font color="#221e1f" size="2">ratio changes the behavioral performance of the subject. A model of transformation of data from retina to visual cortex for evaluation of various L/M cones ratios is presented. While L/M cone ratios close to 1 brings the best performance for one of postreceptoral (magnocellular) channels, we showed that the performance in the second channel (parvocells) will improve when the ratio furthers away from 1. Effects of different ratios of S were also explored. </font></font></p> 22 27 http://bcn.iums.ac.ir/browse.php?a_code=A-10-1-116&slc_lang=en&sid=1 Ali Yoonessi 1370031947532846002042 1370031947532846002042 Yes Mojtaba Hajihasani 1370031947532846002043 1370031947532846002043 No Shahriar Gharibzadeh 1370031947532846002044 1370031947532846002044 No Mohammadreza Zarrindast 1370031947532846002045 1370031947532846002045 No Ahmad Yoonessi 1370031947532846002046 1370031947532846002046 No