Lateral inhibition between orientation detectors in the cat's visual cortex

Computational models of visual neurons specialised in the detection of periodic and aperiodic oriented visual stimuli: bar and grating cells

“…The plot shown in the figure is obtained computationally by using (11). The resemblance to the curve actually measured by Blakemore and Tobin (1972) is amazing (compare with their Fig. 1) cell' to a single bar stimulus which was surrounded by a grating pattern.…”

“…1, there is some neurophysiological evidence for the existence of cells which can be modelled by the above operators. (11) explains the results of an experiment described by Blakemore and Tobin (1972). They describe a 'complex cell' whose response to a bar with optimal size and orientation is inhibited by a grating pattern which covers the area outside the receptive field of the cell, defined as the region in which the cell reacts to a single bar stimulus.…”

“…In previous studies Schiller et al (1976) also found many cells in area V1 which responded strongly to single bars and edges but did not respond to sine-wave gratings. Blakemore and Tobin (1972) measured the response of a 'complex' cell to a white bar of optimal orientation, position and size in the presence of a bar grating covering the area outside a circle which was somewhat larger than the region in which the cell responded to the bar stimulus. They observed an inhibition effect due to the grating.…”

Suppression of contour perception by band-limited noise and its relation to nonclassical receptive field inhibition

“…In contrast to other orientation-selective neurons, such as simple (Hubel and Wiesel 1968), complex (Hubel and Wiesel 1968), and grating (von der Heydt et al 1992) cells, the concerned type of neuron responds strongly to single bars (of appropriate size and orientation) over its CRF and shows reduced response when a grating is added to the surround. The behavior of such a cell was systematically studied by Blakemore and Tobin (1972). The suppression effect they observed was strongest when the surround grating and the optimal bar stimulus over the CRF had the same orientation and decreased when the angle between the two was increased.…”

Motion detection, noise reduction, texture suppression, and contour enhancement by spatiotemporal Gabor filters with surround inhibition

“…Furthermore, neurophysiological studies have also showed that, once a cell is activated by a stimulus in its classical receptive field (CRF), another, simultaneously presented stimulus outside that field can have an effect on the cell response (Blakemore and Tobin 1972;Knierim and van Essen 1992;Nothdurft et al 1999;Jones et al 2001). This, mostly inhibitive, effect is known as nonclassical receptive field inhibition or surround suppression.…”