Visuo-tactile shape perception in women with Anorexia Nervosa and healthy women with and without body concerns

Risso, Gaia; Martoni, Riccardo Maria; Erzegovesi, Stefano; Bellodi, Laura; Baud-Bovy, Gabriel

doi:10.1016/j.neuropsychologia.2020.107635

Cited by 19 publications

(31 citation statements)

References 49 publications

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“…For example, in visual body size estimate research, the type of measure employed has been found to modulate body size estimates (Cornelissen et al, 2017). Some studies which found differences in TDE between AN and HC used alternative methods (Risso et al, 2020;Spitoni et al, 2015), and these methods may be more suited to capturing perceptual differences between these groups (see also : Tosi & Romano, 2020). Accordingly, future research should further investigate these claims, employing various methods of assessing tactile size perception.…”

Section: Discussionmentioning

confidence: 99%

“…Many of these differences have also been found in recovered (REC) patients (Engel & Keizer, 2017). Apart from differences in visual size estimation, affordance perception, and movement, AN patients appear to perceive touch as if their bodies were larger than reality (Keizer et al, 2011;Keizer et al, 2012;Risso et al, 2020;Spitoni et al, 2015cf. Mergen et al, 2018.…”

Section: Introductionmentioning

confidence: 93%

“…abdomen, waist) compared to those that are not (e.g. sternum), and on the horizontal rather than vertical axis (Risso et al, 2020;Spitoni et al, 2015). The standard interpretation of these findings attributes them to perceptual differences between AN patients and HC.…”

Section: Introductionmentioning

confidence: 95%

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Waiting longer, feeling fatter: Effects of response delay on tactile distance estimation and confidence in females with anorexia nervosa

Engel¹,

Gadsby²,

Corcoran³

et al. 2021

Preprint

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Research suggests that anorexia nervosa (AN) patients overestimate their own body size. However, researchers are divided over whether this overestimation stems from perceptual or non-perceptual differences. In this study, we investigated the influence of non-perceptual factors in tactile size estimation, in a sample of AN patients (N = 30), recovered AN (REC) patients (N = 29) and healthy controls (N=31), by manipulating the role of allowed response time. We further investigated the relationship between allowed response time and participants’ confidence in their tactile judgments. Participants were asked to estimate tactile distances presented on the skin of either a salient (abdomen) or non-salient (arm) body part, either directly after stimulus presentation or after a 5 second delay. Confidence of estimation accuracy was measured after each response. Results showed that allowing AN and REC more time to respond caused them to estimate tactile distances as larger. Additionally, AN patients became less confident when given more time to respond. These results suggest that non-perceptual influences cause AN patients to increase their estimates of tactile distances and become less certain of these estimates. We suggest that previous findings—where AN patients estimate tactile distances as larger than HC—may be due to non-perceptual differences.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

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Waiting longer, feeling fatter: Effects of response delay on tactile distance estimation and confidence in females with anorexia nervosa

Engel¹,

Gadsby²,

Corcoran³

et al. 2021

Preprint

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show abstract

“…Against the background of the growing number of people suffering from various eating disorders (ED), the issues of anorexia are being paid more attention to during recent decades [1]. Concerned with the problem of spread and rejuvenation of this disorder, scientists and practitioners make numerous attempts to find the causes of its appearance [2,3,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Traumatic influence of the attitude towards one’s own gender as a factor in the development of eating disorders

Tsapenko

2021

E3S Web Conf.

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At present, the amount of people suffering from various types of eating disorders is steadily increasing all over the world. A large proportion is occupied by people with manifestations of anorexia. Primarily this disorder affects female representatives at the age of 13-20 years. Taking into account the severity of the consequences that anorexia leads to, cases of death are increasingly being recorded, including adolescents. That’s why the question of providing effective assistance to such patients is especially relevant. However, without establishing the true causes, the results achieved during the treatment may be only short-term. In this connection, the author made an attempt to look at the problem more deeply. Thus, the article is devoted to the consideration of the causes of anorexia of adolescent girls, lying in the field of the unconscious, in particular, in a deep psychological trauma received in childhood. According to the author, the reasons of this trauma are the perception as a humiliation of the manifestations of the brother’s admiration or friends’ son from the girl’s parents, as opposed to the lack of attention, warmth and care towards her. The arising misunderstanding of the reason for such a different attitude contributes to the formation of a girl’s confidence that it is better to be a boy and, as a result, an unwillingness to be a woman. This, in turn, leads to anorexic behavior, as anorexia can inhibit the transformation of the body into a woman. The given assessment was confirmed in a conducted study among 128 girls aged 13-18 years with various eating disorders, including 46 with manifestations of anorexia nervosa. The substantiation of the hypothesis put forward at the beginning of the study was checked by means of a statistical method - the Fisher-φ test.

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“…A recent study showed a tactile perceptual deficit correlated with clinical scores in AN but no impairment in the integration of tactile and visual information (Risso et al, 2020). Consequently, to disturbances in body representation, patients with AN have a higher level of body dissatisfaction (discrepancy between the actual and ideal selves) and more negative thoughts and feelings about their own body.…”

mentioning

confidence: 99%

Are marked body shape concerns associated with poorer outcomes at the one‐year follow‐up in anorexia nervosa?

et al. 2021

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Anorexia nervosa (AN) is a frequently occurring eating disorder (ED) that mainly affects young women. Despite the progress that has been made in understanding and supporting this condition, its prognosis remains unclear. According to the American Psychiatric Association, AN has a prevalence of 0.4%, and the mortality is evaluated to be approximately 5% per decade, with death by suicide representing half of this rate and

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Visuo-tactile shape perception in women with Anorexia Nervosa and healthy women with and without body concerns

Cited by 19 publications

References 49 publications

Waiting longer, feeling fatter: Effects of response delay on tactile distance estimation and confidence in females with anorexia nervosa

Waiting longer, feeling fatter: Effects of response delay on tactile distance estimation and confidence in females with anorexia nervosa

Traumatic influence of the attitude towards one’s own gender as a factor in the development of eating disorders

Are marked body shape concerns associated with poorer outcomes at the one‐year follow‐up in anorexia nervosa?

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