scholarly journals Mach Band Type Lateral Inhibition in Different Sense Organs

1967 ◽  
Vol 50 (3) ◽  
pp. 519-532 ◽  
Author(s):  
Georg von Békésy
Keyword(s):  
Lateral Inhibition ◽  
Geometrical Model ◽  
Sense Organs ◽  
Sensation Magnitude ◽  
Visual Phenomenon ◽  
Mach Bands ◽  
Band Type ◽  
Mach Band

Experiments were done on the skin with shearing forces, vibrations, and heat stimuli and on the tongue with taste stimuli to show that the well known Mach bands are not exclusively a visual phenomenon. On the contrary, it is not difficult to produce areas of a decreased sensation magnitude corresponding to the dark Mach bands in vision. It is shown on a geometrical model of nervous interaction that the appearance of Mach bands for certain patterns of stimulus distribution is correlated with nervous inhibition surrounding the area of sensation. This corroborates the earlier finding that surrounding every area transmitting sensation there is an area simultaneously transmitting inhibition.

Lateral inhibition of heat sensations on the skin

1962 ◽  
Vol 17 (6) ◽  
pp. 1003-1008 ◽  
Author(s):  
G. V. Békésy
Keyword(s):  
Spatial Distribution ◽  
Traveling Waves ◽  
Lateral Inhibition ◽  
Organ Of Corti ◽  
Directional Hearing ◽  
Sensation Magnitude ◽  
Mach Bands

Many of the similarities that have been found between the organ of Corti, the eye, and the vibratory skin sensations are a consequence of lateral inhibition, and these similarities can be extended to heat sensations on the skin also. The chief differences lie in their numerical values. Analogues in heat sensations can be demonstrated for such phenomena as Mach bands and directional hearing, as well as the very pronounced sharpening effects of the spatial distribution of the sensation magnitude for traveling waves. Submitted on May 16, 1962

scholarly journals What causes edge fixation in walking flies?

1990 ◽  
Vol 149 (1) ◽  
pp. 281-292 ◽  
Author(s):  
D. Osorio ◽  
M. V. Srinivasan ◽  
R. B. Pinter
Keyword(s):  
Visual Field ◽  
Lateral Inhibition ◽  
Lucilia Cuprina ◽  
Dark Side ◽  
Dark Line ◽  
Dark Region ◽  
Dark Background ◽  
Mach Band ◽  
Eye Region

The orientation of freely walking flies (female Lucilia cuprina) to lines and stripes in a circular arena is described. The following observations were made. 1. The flies walked straight towards a dark line using the frontal eye region, but a pale line on a dark background was only weakly attractive. 2. In bright conditions flies walked in a curved line towards a black-white edge, the path being convex towards the dark side of the border. The curves indicated that the flies were heading for a point about 5–10 degrees to the dark side of the edge. 3. In dim conditions the edge of a dark region was not especially attractive and flies headed towards any point in the dark area. These observations can be accounted for by assuming that the fly walks towards the darkest region in its visual field (scototaxis). In bright conditions the edges of a dark region become more attractive than its centre. This change could be explained if lateral inhibition creates a ‘Mach-band’ effect, making the edges appear darker than the centre. Thus, fixation behaviour in walking Lucilia females seems to be a simple taxis.

Mach-Band Attenuation by Adjacent Stimuli: Experiment and Filling-in Simulations

Perception ◽  
1996 ◽  
Vol 25 (4) ◽  
pp. 425-442 ◽  
Author(s):  
Luiz Pessoa
Keyword(s):  
Computer Simulations ◽  
Brightness Perception ◽  
Mach Bands ◽  
Mach Band

Mach bands are illusory bright and dark bands seen where a luminance plateau meets a ramp, as in half shadows or penumbras. It has previously been shown that Mach bands are attenuated by placing stimuli, such as bars, nearby. It was shown in an experiment in which Mach-band attenuation for bar and Craik–O'Brien stimuli was compared that they are equally effective in attenuating Mach bands. The results suggest that the abrupt luminance transition of a stimulus adjacent to a ramp is responsible for the attenuation. The findings are interpreted in terms of a recent filling-in model of brightness perception and the results of computer simulations of stimuli are shown.

scholarly journals On searching for “Mach band type” phenomena in colour vision

1967 ◽  
Vol 7 (11-12) ◽  
pp. 1027-1029 ◽  
Author(s):  
Gerard J.C. van der Horst ◽  
Maarten A. Bouman
Keyword(s):  
Colour Vision ◽  
Band Type ◽  
Mach Band

Perceptual Adaptation of Image Based on Chevreul–Mach Bands Visual Phenomenon

2017 ◽  
Vol 24 (5) ◽  
pp. 594-598 ◽  
Author(s):  
Mahdi Khosravy ◽  
Neeraj Gupta ◽  
Ninoslav Marina ◽  
Ishwar K. Sethi ◽  
Mohammad Reza Asharif
Keyword(s):  
Perceptual Adaptation ◽  
Visual Phenomenon ◽  
Mach Bands

Increment and Decrement Detection across the Mach-Band Stimulus

Perception ◽  
1996 ◽  
Vol 25 (1_suppl) ◽  
pp. 69-69
Author(s):  
G B Henning ◽  
N J Hill ◽  
R W Millar ◽  
G G R Green
Keyword(s):  
Detection Performance ◽  
Optical Society ◽  
Weighting Functions ◽  
Pattern Vision ◽  
One Dimensional ◽  
Low Luminance ◽  
Mach Bands ◽  
Mach Band ◽  
Made In

The ability of observers to detect bright and dark horizontally oriented lines was measured using standard 2AFC procedures. The lines to be detected were either increments or decrements in luminance superimposed on a luminance pattern that produced horizontally oriented Mach bands. Measurements were made in the uniform regions of high and low luminance that flank the Mach-band-producing luminance ramp as well as in the vicinity of the bright and dark Mach bands. Detection performance was significantly affected by both dark and bright Mach bands. The reliability of the results makes it reasonable to attempt to infer, following E M Lowry and J J DePalmer (1961 Journal of the Optical Society of America51 740 – 746), spatial weighting functions for (one-dimensional) pattern vision.

Mach Bands: Visual Phenomenon of Edge Enhancement

Radiology ◽  
2002 ◽  
Vol 222 (2) ◽  
pp. 577-577
Author(s):  
Douglas L. Teich
Keyword(s):  
Edge Enhancement ◽  
Visual Phenomenon ◽  
Mach Bands

scholarly journals Mach bands in the lateral eye of Limulus.

1975 ◽  
Vol 65 (6) ◽  
pp. 709-730 ◽  
Author(s):  
R B Barlow ◽  
D A Quarles
Keyword(s):  
Optic Nerve ◽  
Piecewise Linear ◽  
Theoretical Models ◽  
Nerve Fibers ◽  
Uniqueness Condition ◽  
Response Patterns ◽  
Lateral Eye ◽  
Mach Bands ◽  
Different Dimensions ◽  
Mach Band

Patterns of optic nerve activity were computed for stationary step patterns of illumination from theoretical models of lateral inhibiton based on revised Hartlin-Ratliff equations. The computed response patterns contain well-defined Mach bands which match closely in amplitude and shape those recorded from single optic nerve fibers of the Limulus lateral eye. Theory and experiment show that the amplitude of the Mach bands is reduced by in inhibitory nonlinearity, the width of the Mach bands is approximately equal to the lateral dimension of the inhibitory field, but the shapes of the Mach bands are poor indices of the precise configuration of the inhibitory field. Theorems are proved establishing the equivalence of Mach-band patterns for models of different dimensions and a uniqueness condition for solutions of the piecewise linear model.

Seven-colour photometry at the Geneva Observatory

1966 ◽  
Vol 24 ◽  
pp. 262-266 ◽  
Author(s):  
M. Golay
Keyword(s):  
Wide Band ◽  
Electric System ◽  
Band Type

During the last 5 years, we have developed a seven-colour photometry at the Geneva Observatory. Our multicolour photo-electric system is of a wide-band type; the bandwidth being about 500Å for four filters. The three others are similar to theUBVsystem. In Table 1 we give the filter combinations used in our photometry (1).

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