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Single-band amplitude demodulation of Müller-Lyer illusion images

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2007-05
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Complutense University of Madrid
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The perception of the Müller-Lyer illusion has previously been explained as a result of visual low band-pass spatial filtering, although, in fact, the illusion persists in band-pass and high-pass filtered images without visible low-spatial frequencies. A new theoretical framework suggests that our perceptual experience about the global spatial structure of an image corresponds to the amplitude modulation (AM) component (or its magnitude, also called envelope) of its AM-FM (alternatively, AM-PM) decomposition. Because demodulation is an ill-posed problem with a non-unique solution, two different AM-FM demodulation algorithms were applied here to estimate the envelope of images of Müller-Lyer illusion: the global and exact Daugman and Downing (1995) AMPM algorithm and the local and quasi-invertible Maragos and Bovik (1995) DESA. The images used in our analysis include the classic configuration of illusion in a variety of spatial and spatial frequency content conditions. In all cases, including those of images for which visual low-pass spatial filtering would be ineffective, the envelope estimated by single-band amplitude demodulation has physical distortions in the direction of perceived illusion. It is not plausible that either algorithm could be implemented by the human visual system. It is shown that the proposed second order visual model of pre-attentive segregation of textures (or "back-pocket" model) could recover the image envelope and, thus, explain the perception of this illusion even in Müller-Lyer images lacking low spatial frequencies.
La percepción de la ilusión de Müller-Lyer ha sido explicada como resultado del filtrado visual paso-bajo de las imágenes en las que aparece, aunque, de hecho, la ilusión se percibe en imágenes paso-banda y paso-alto carentes de bajas frecuencias espaciales. Una nueva manera de pensar acerca del procesamiento visual espacial sugiere que la percepción de la estructura espacial global de una imagen se corresponde con el componente de amplitud modulada (AM) o envolvente resultante de su descomposición AM-FM (o, alternativamente, de su descomposición AM-PM). En este trabajo,la envolvente de imágenes de la ilusión de Müller-Lyer se estimó mediante dos algoritmos de demodulación: el algoritmo AMPM de Daugman y Downing (1995) y DESA de Maragos & Bovik (1995). Las imágenes de Müller-Lyer utilizadas presentan la configuración clásica de la ilusión en diferentes versiones espaciales y con diferente contenido en frecuencia espacial. Para cada una de las imágenes utilizadas, incluidas aquellas en las que su filtrado paso-bajo es inútil para obtener su estructura global, la envolvente estimada mediante la demodulación de la amplitud presenta distorsiones físicas que se corresponden con la ilusión percibida. Es poco plausible que el sistema visual humano implemente cualquiera de los dos algoritmos utilizados. Sin embargo, se muestra que el modelo de mecanismos visuales de segundo orden propuesto para la segregación preatencional de la textura puede recuperar la envolvente de los estímulos visuales,explicándose así la percepción de la ilusión de Müller-Lyer aún en imágenes carentes de bajas frecuencias espaciales.
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Adan A, Archer SN, Hidalgo MP, Di Milia L, Natale V, Randler C. (2012). Circadian typology: A comprehensive review. Chronobiol Int. 29:1153-75. Adan A, Guardia J. (1993). Circadian variations of self-reported activation: A multidimensional approach. Chronobiologia 20:233-44. Al-Dujaili EAS, Sharp MA. (2012). Female salivary testosterone: Measurement, challenges and applications. In: SM. Ostojic (ed.). Steroids – From Physiology to Clinical Medicine doi: 10.5772/53648. Bailey SL, Heitkemper MM. (2001). Circadian rhythmicity of cortisol and body temperature: Morningness-eveningness effects. Chronobiol Int. 18:249-61. Barak Y, Stein D, Ring A, Ticher A, Elizur A. (1997). Patterns of first intercourse: a survey among Israeli women. Biol Rhythm Res. 28:36-41. Brotto LA, Gorzalka BB. (2000). Melatonin enhances sexual behavior in the male rat. Physiol Behav. 68:483-6. Brotto LA, Gorzalka BB, LaMarre AK. (2001). Melatonin protects against the effects of chronic stress on sexual behaviour in male rats. NeuroReport 12:3465-9. Burgess HJ, Fogg LF. (2008) Individual differences in the amount and timing of salivary melatonin secretion. PloS One 3:e3055. Escorial S, Martín-Buro C. (2012). The role of personality and intelligence in assortative mating. Span J Psychol. 15:680-7. Fisher WA, Rosen RC, Eardley I, Sand M, Goldstein I. (2005). Sexual experience of female partners of men with erectile dysfunction: The female experience of men’s attitudes to life events and sexuality (FEMALES) Study. J Sex Med. 2:675-84. Goldstein D, Hahn CS, Hasher L, Wiprzycka UJ, Zelazo PD. (2007). Time of day, intellectual performance, and behavioral problems in morning versus evening type adolescents: Is there a synchrony effect? Pers Individ Dif. 42:431-40. Gupta SK, Lindemulder EA, Sathvan G. (2000). Modeling of circadian testosterone in healthy men and hypogonadal men. J Clin Pharmacol. 40:731-8. Gunawardane KGC, Custance DM, Piffer D. (2011). Evidence of sexual selection for evening orientation in human males: A cross-cultural study in Italy and Sri Lanka. IBC. 3:1-8. Hasler BP, Troxel WM. (2010). Couples’ nighttime sleep efficiency and concordance: Evidence for bidirectional associations with daytime relationship functioning. Psychosom Med. 72:794-801. Hewlett BS, Hewlett BL. (2010). Sex and searching for children among Aka foragers and Ngandu farmers of central Africa. Afr Study Monogr. 31:107-25. Jankowski KS. (2013). Polish version of the reduced Morningness-Eveningness Questionnaire. Biol Rhythm Res. 44:427-33. Jankowski KS. (2014). Composite Scale of Morningness: psychometric properties, validity with Munich ChronoType Questionnaire and age/sex differences in Poland. Eur Psychiatry doi: 10.1016/j.eurpsy.2014.01.004. Jankowski KS, Díaz-Morales JF, Randler C. (2014). Morningness-eveningness and sociosexuality: evening females are less restricted than morning ones. Pers Individ Dif. doi: 10.1016/j.paid.2014.04.006. Jankowski KS, Ciarkowska W. (2008). Diurnal variation in energetic arousal, tense arousal, and hedonic tone in extreme morning and evening types. Chronobiol Int. 25:577-95. Kohyama J. (2009). A newly proposed disease condition produced by light exposure during night: Asynchronization. Brain Dev. 31:255-73. Larsen JH, Crane DR, Smith CW. (1991). Morning and night couples: the effect of wake and sleep patterns on marital adjustment. J Marital Fam Ther. 17:53-65. May CP, (1999). Synchrony effects in cognition: The costs and a benefit. Psychon Bull Rev. 6:142-7. Monk TH, Buysse DJ, Reynolds III CF, Berga SL, Jarrett DB, Begley AE, Kupfer DJ. (1997). Circadian rhythms in human performance and mood under constant conditions. J Sleep Res. 6:9-19. Palmer JD, Udry JR, Morris NM. (1982). Diurnal and weekly, but no lunar rhythm in human copulation. Hum Biol. 54:111-21. Pettersen JL, Hyde JS. (2010). A meta-analytic review of research on gender differences in sexuality, 1993-2007. Psychol Bull. 136:21-38. Portaluppi F, Smolensky M, Touitou Y. (2010). Ethics and methods for biological rhythm research on animals and human beings. Chronobiol Int. 27:1911-29. Refinetti R. (2005). Time for sex: nycthemeral distribution of human sexual behavior. J Circadian Rhythms 3:4. Randler C, Ebenhöh N, Fischer A, Höchel S, Schroff C, Stoll JC, Vollmer C. (2012). Chronotype but not sleep length is related to salivary testosterone in young adult men. Psychoneuroendocrinology, 37:1740-4. Randler C, Barrenstein S, Vollmer C, Díaz-Morales JF, Jankowski KS. (2014). Women would like their partners to be more synchronized with them in their sleep-wake rhythm. Span J Psychol. Randler C, Kretz S. (2011). Assortative mating in morningness-eveningness. Int J Psychol. 46:91-6. Reinberg A, Lagoguey M. (1978). Circadian and circannual rhythms in sexual activity and plasma hormones (FSH, LH, testosterone) of five human males. Arch Sex Behav. 7:13- 30. Troxel WM, Robles TF, Hall M, Buysse DJ. (2007). Marital quality and the marital bed: Examining the covariation between relationship quality and sleep. Sleep Med Rev. 11:389-402).
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