Table 1.

Different types of relay cells and their relative percentages in the mouse LGN^a

Cell type	No. of cells recorded intracellularly	Percentages
On-center (push-pull)	27	24.77
Off-center (push-pull)	20	18.35
On-Off (non–orientation-selective/non–direction-selective)	19	17.43
Orientation-selective	9	8.26
Direction-selective	6	5.50
Local edge detector/W3-like	5	4.59
Suppressed by contrast	8	7.34
Unclassified	15	13.76
Total	109	100

^aRelay cells were classified as On-center, Off-center, On-Off, W3-like, or suppressed-by-contrast-like based on responses to sparse noise, discs, and gratings. A subset of On-Off relay cells, whose responses to drifting gratings had OSI or DSI values >0.33 (Zhao et al., 2013), were further classified as orientation- or direction-selective.