Table 1.

Breakdown of pattern-motion-selective and component-motion-selective units in cat and primate visual areas under anesthesia

Area, species	Pattern cells, %	Component cells, %	References
V1, cat	0	87	Gizzi et al. (1990)
V1, cat	0	100	Merabet et al. (1998)
V1, cat	0	100	Scannell et al. (1996)
V1 (layers 5, 6), monkey	2.6	79	Movshon and Newsome (1996)
V1, monkey	6	82	Khawaja et al. (2009)
V1 (layers 4C, 6), monkey	0	66	Guo et al. (2004)
V1 (cat and monkey)	0	84	Movshon et al. (1985)
Extrastriate
LS, cat	5	72.5	Gizzi et al. (1990)
PMLS, cat	50	0	Merabet et al. (1998)
AEV, cat	55	1.6	Scannell et al. (1996)
Pulvinar-LP, cat	31	13.70	Merabet et al. (1998)
MT, monkey	20	27.4	Movshon and Newsome (1996)
MT, monkey	30	33	Rodman and Albright (1989)
MT, monkey	16	34	Movshon et al. (1985)
MST, monkey	66	9.6	Khawaja et al. (2009)

Generally, CM-selective units prevail in area V1 of anesthetized cats and monkeys. On average, 84% of directionally selective V1 cells are classified as CM-selective (66–100% depending on the study; see also Figs. 4C, 5C). Note that essentially no PM-selective cells are identified in V1 of anesthetized cats and monkeys (∼1.3% on average; none in most studies). To be exact, 1 of 38 V1 units was found to be PM-selective in one study (Movshon and Newsome, 1996) and 2 of 33 in another (Khawaja et al., 2009), and none were found in the rest of the studies (Movshon et al., 1985; Gizzi et al., 1990; Scannell et al., 1996; Merabet et al., 1998; Guo et al., 2004). Extrastriate areas and high-order thalamic nuclei contain a variable percentage of PM-selective units (5–55%) and CM-selective units (0–72.5%). LS, lateral suprasylvian area; PMLS, posteromedial lateral suprasylvian area; AEV, anterior ectosylvian area; LP, lateral posterior nucleus of thalamus.