Simple Cells of the Striate Cortex

Henry, G H; Bishop, Peter

doi:10.1016/b978-0-12-151805-9.50007-9

Cited by 21 publications

(8 citation statements)

References 28 publications

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“…In the histograms in this paper the stimulus turn round point is indicated by a vertical arrow (Fig. 1) (Henry & Bishop, 1971 Direction of luminous contrast. Since the direction of movement determines the effectiveness of an edge, the direction of luminous contrast is defined in terms of the direction ofmovement.…”

Section: Methodsmentioning

confidence: 99%

“…For small departures from the optimal orientation of the edge, the response is markedly reduced and, with further departure, the cell is deeply inhibited. The cells frequently show complete direction selectivity, responding in one direction of stimulus movement and being usually deeply inhibited on the reverse direction (Henry & Bishop, 1971). Even for a stimulus of optimal orientation moving in the preferred direction, there are relatively wide inhibitory side bands about 20 across to one or both sides of the discharge centre (Bishop et al 1971 b).…”

Section: Introductionmentioning

confidence: 99%

“…It is the aim of this paper to describe the spatial organization RECEPTIVE FIELD DISCHARGE CENTRES of the excitatory regions in the receptive fields of simple cells. Other aspects of the receptive field organization of these cells will be taken up in subsequent papers (Bishop, Coombs & Henry, 1971a;Henry & Bishop, 1971). Hubel & Wiesel (1962) classified cells in the striate cortex as simple largely on the basis that their receptive fields could be mapped into spatially distinct ON and OFF areas using stationary flashing spots or slits of light.…”

Section: Introductionmentioning

confidence: 99%

“…A further characteristic feature of the response of simple cells to an optimally oriented edge or slit moving in the preferred direction is that the discharge increases with 628 P. O. BISHOP, J. S. COOMBS AND G. H. HENRY increasing length of the edge up to a maximum and any further increase in length is without effect, either of excitation or inhibition. A general summary of the properties of the receptive fields of simple cells is given elsewhere (Henry & Bishop, 1971). …”

Section: Introductionmentioning

confidence: 99%

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Responses to visual contours: spatio‐temporal aspects of excitation in the receptive fields of simple striate neurones

Bishop¹,

Coombs²,

Henry³

1971

The Journal of Physiology

202

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SUMMARY1. The properties of the receptive fields of simple cells in the cat striate cortex have been studied by preparing average response histograms both to moving slits of light of different width and to single light-dark edges or contours.2. The movement of a narrow ( < 0.3) slit across the receptive field gives rise to average response histograms that are either unimodal, bimodal or multimodal. A slit of light has leading (light) and trailing (dark) edges. By increasing the width of the slit it was shown that a discharge peak in the histogram coincides with the passage of one or other of the two edges over a particular region (discharge centre) in the receptive field. Each edge has its own discharge centre which is fired when the edge has the correct orientation and direction of movement.3. The discharge centres in forty-three simple cell receptive fields were located by using one or more of the following stimuli for each cell: (i) slits of different width; (ii) single light and dark edges;(iii) a wide (30) slit moved over a range of different velocities.The same locations were obtained when all three procedures were used on the same cell.4. Most cells (79 %) discharged to both edges though not necessarily in the same direction of movement. The majority (72 %) fired in only one direction and most commonly (51 %) the cells responded to both edges in this one direction. In only 16 % of cells did both types of edge excite in both directions of movement. When the one type of edge, light or dark, was considered, 84 % of the cells were direction selective and, for these cells, the other edge fired only in the same direction (51 %), in both directions (7 %), only in the opposite direction (5 %) or not at all (21 %).

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Responses to visual contours: spatio‐temporal aspects of excitation in the receptive fields of simple striate neurones

Bishop¹,

Coombs²,

Henry³

1971

The Journal of Physiology

202

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show abstract

“…This result is consistent with microelectrode evidence (e.g., Burns & Pritchard, 1964) that spatially selective cells are sensitive to contrast. Henry and Bishop (1971) studied the response of cortical cells tuned to contour orientation and motion when contrast was unchanged and space-average luminance varied. Neural response was relatively unaffected by a shift of 2 log units in luminance.…”

Section: Discussionmentioning

confidence: 99%

Brightness selectivity in the motion aftereffect

Over

Broerse

1973

Perception & Psychophysics

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Eighteen Ss were required to track the apparent motion of a stationary grating viewed after prolonged inspection of a moving grating. Measures were obtained with the inspection and test gratings identical in contrast but different in space-average luminance, or with luminance held constant and contrast varied. The aftereffect was reduced as the gratings differed in space-average luminance, but contrast exerted less uniform influence as a variable. Brightness-selectivity in the motion aftereffect is interpreted within the selective adaptation model of aftereffects as evidence that some detectors in human vision are conjointly tuned to space-average luminance and image motion.

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A neurophysiological model for anomalous correspondence based on mechanisms of sensory fusion

Nelson

1981

Doc Ophthalmol

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Normal retinal correspondence is not stable. The arguments for the plasticity of correspondence in normal binocular vision have been given into previous papers (Nelson, 1975, 1977). In this paper, both laboratory research and the clinical strabismus literature are reviewed to show similarities between normal and abnormal binocular vision. In particular, it is argued that sensory fusion (Panum's areas) and anomalous retinal correspondence (AC) obey similar principles, and so a sensory fusional model of AC may be developed. Recent advances in the neurophysiology of binocular vision are reviewed, but current laboratory knowledge cannot account for many phenomena known clinically unless certain postulates are made. Two hypothesized intracortical interactions among binocular disparity detectors, termed disparity domain inhibition and spatial domain facilitation, play key roles in extending the neurophysiology of binocular vision to an account of both normally - and clinically - observed plasticities of correspondence. The fusional model of retinal correspondence developed here from postulated domain interactions contrasts with the older concept of fixed corresponding points, an approach which has failed to provide a unified foundation for the treatment of normal and abnormal binocular vision.

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Simple Cells of the Striate Cortex

Cited by 21 publications

References 28 publications

Responses to visual contours: spatio‐temporal aspects of excitation in the receptive fields of simple striate neurones

Responses to visual contours: spatio‐temporal aspects of excitation in the receptive fields of simple striate neurones

Brightness selectivity in the motion aftereffect

A neurophysiological model for anomalous correspondence based on mechanisms of sensory fusion

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