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Fig. 11 (abstract 14) | Archives of Physiotherapy

Fig. 11 (abstract 14)

From: 5th National Congress of the Italian Society of Physiotherapy

Fig. 11 (abstract 14)

Graphical representation of the Cornsweet effect5: the two areas in the upper image have the same hue and brightness, but are perceived by the human eye as two different shades of gray -a darker (a) and a lighter one (b)- due to the presence of the central ‘ridge’, which consists of two rows of pixels of different shades of gray. When the central ridge is hidden by a black band (c) this effect is no longer evident. Observing the lower image from a patient’s skin, on the left (d) one perceives the area under KT tail as lighter than the surrounding skin. This perceived difference in chromatic intensity is reduced when the areas near the margins are hidden (e)

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