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Maria Santacà
University of Padua
PsychologyDelboeuf illusionGuppyBiologyZoology
6Publications
1H-index
8Citations
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Publications 12
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#1Maria Santacà (UNIPD: University of Padua)H-Index: 1
#2Tyrone Lucon-Xiccato (University of Ferrara)H-Index: 3
Last. Christian Agrillo (UNIPD: University of Padua)H-Index: 25
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An optimal foraging strategy often requires identifying and choosing the larger amount of food in the presence of multiple options, in order to maximize food intake. Food quantity estimation frequently depends on the perceptual ability to segregate food from the surrounding background. In human and nonhuman animals, it has recently been shown that the perception of food size is affected by the size of the background on which food is presented, with a tendency to overestimate food items encircled...
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#1Maria Santacà (UNIPD: University of Padua)H-Index: 1
#2Christian Agrillo (UNIPD: University of Padua)H-Index: 25
The horizontal-vertical (HV) illusion is characterized by a tendency to overestimate the length of vertically-arranged objects. Comparative research is primarily confined to primates, a range of species that, although arboreal, often explore their environment moving along the horizontal axis. Such behaviour may have led to the development of asymmetrical perceptual mechanisms to make relative size judgments of objects placed vertically and horizontally. We observed the susceptibility to the HV i...
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#1Maria Santacà (UNIPD: University of Padua)H-Index: 1
#2Christian Agrillo (UNIPD: University of Padua)H-Index: 25
Last. Angelo Bisazza (UNIPD: University of Padua)H-Index: 56
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Several studies have investigated the ontogeny of the capacity to discriminate between discrete numerical information in human and non-human animals. Contrarily, less attention has been devoted to the development of the capacity to discriminate continuous quantities. Recently, we set up a fast procedure for screening continuous quantity abilities in adult individuals of an animal model in neurodevelopmental research, the zebrafish. Two different sized holes are presented in a wall that divides t...
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#1Maria Santacà (UNIPD: University of Padua)H-Index: 1
#2Maria Elena Miletto Petrazzini (QMUL: Queen Mary University of London)H-Index: 1
Last. Anna Wilkinson (University of Lincoln)H-Index: 17
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Visual illusions have been widely used to compare visual perception among birds and mammals to assess whether animals interpret and alter visual inputs like humans, or if they detect them with little or no variability. Here, we investigated whether a nonavian reptile (Pogona vitticeps) perceives the Muller-Lyer illusion, an illusion that causes a misperception of the relative length of 2 line segments. We observed the animals' spontaneous tendency to choose the larger food quantity (the longer l...
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#1Maria Santacà (UNIPD: University of Padua)H-Index: 1
#2Christian Agrillo (UNIPD: University of Padua)H-Index: 25
: The Muller-Lyer illusion is a well-known distortion illusion that occurs when the spatial arrangement of inducers (i.e., inwards- or outwards-pointing arrowheads) influences a line's perceived relative length. To date, this illusion has been reported in several animal species but only in 1 teleost fish (i.e., redtail splitfins Xenotoca eiseni), although teleost fish represent approximately 50% of vertebrate diversity. We investigated the perception of this illusion in another teleost fish: gup...
2 CitationsSource
#1Maria Santacà (UNIPD: University of Padua)H-Index: 1
#2Tiziano Caja (UNITO: University of Turin)H-Index: 1
Last. Angelo Bisazza (UNIPD: University of Padua)H-Index: 56
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In humans, aging and neurodegenerative diseases have been found to be associated with impairment in both mathematical abilities and estimation of continuous quantities such as size, weight or distance. Zebrafish (Danio rerio) is rapidly becoming a model for human aging and brain disorders but we currently lack any instrument for rapid assessment of quantity estimation abilities in this species. Here we developed a simple method based on spontaneous preference of zebrafish for using the larger av...
1 CitationsSource
#1Christian Agrillo (UNIPD: University of Padua)H-Index: 25
#2Maria Santacà (UNIPD: University of Padua)H-Index: 1
Last. Maria Elena Miletto Petrazzini (QMUL: Queen Mary University of London)H-Index: 1
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The study of visual illusions has captured the attention of comparative psychologists since the last century, given the unquestionable advantage of investigating complex perceptual mechanisms with relatively simple visual patterns. To date, the observation of animal behavior in the presence of visual illusions has been largely confined to mammal and bird studies. Recently, there has been increasing interest in investigating fish, too. The attention has been particularly focused on guppies, redta...
1 CitationsSource
Optical illusions have been widely used to compare visual perception among vertebrates because they can reveal how the system is able to adapt to visual input. Sensitivity to visual illusions has never been studied in reptiles. Here, we investigated whether red-footed tortoises, Chelonoidis carbonaria, and bearded dragons, Pogona vitticeps, perceive the Delboeuf illusion. This illusion involves the misperception of the size of a target circle depending upon the context in which it is presented. ...
1 CitationsSource
#1Maria Santacà (UNIPD: University of Padua)H-Index: 1
#2Melania Busatta (UNITO: University of Turin)H-Index: 1
Last. Angelo Bisazza (UNIPD: University of Padua)H-Index: 56
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Animal species differ considerably in their ability to detour around a see-through obstacle to reach a goal positioned behind it. This variation is commonly assumed to derive from interspecific differences in the cognitive functions involved in the execution of the task, such as spatial abilities and inhibitory motor control. A teleost fish, the guppy, Poecilia reticulata, has recently been found to outperform many mammals and birds in this type of task. To determine whether this is a typical co...
1 CitationsSource
#1Maria Santacà (UNIPD: University of Padua)H-Index: 1
#2Melania Busatta (UNITO: University of Turin)H-Index: 1
Last. Angelo Bisazza (UNIPD: University of Padua)H-Index: 56
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Behavioural responses to the environment often require the suppression of strong internal predispositions or the overriding of external lures, tasks performed by a cognitive function called inhibitory control. Inhibitory control of nonhuman animals is generally measured with the cylinder task: subjects are presented with food inside a transparent cylinder and must inhibit their tendency to reach the food directly and instead detour round the cylinder to solve the task. However, several studies h...
4 CitationsSource
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