17 papers · ranked by Valyu relevance
Guido Marco Cicchini, Giovanni Anobile, David C. Burr
Humans, including infants, and many other species have a capacity for rapid, nonverbal estimation of numerosity. However, the mechanisms for number perception are still not clear; some maintain that the system calculates numerosity via density estimates-similar to those involved in texture-while others maintain that…
Michele Fornaciai, Joonkoo Park, Roberto Arrighi
Perceiving numerosity-the number of discrete items in a set-represents a fundamental step to understand the surrounding environment. Its ubiquitous nature across animal species suggests that it provides important advantages for survival. It is also thought to serve as an important basis for advanced mathematical…
Guido Marco Cicchini, Giovanni Anobile, David C. Burr, Paolo Marchesini + 1 more
'Paolo Marchesini' 'Roberto Arrighi'] Numerosity perception refers to the ability to make rapid but approximate estimates of the quantity of elements in a set (spatial numerosity) or presented sequentially (temporal numerosity). Whether numerosity is directly perceived or indirectly recomputed from non-numerical…
Irene Togoli, Olivier Collignon, Domenica Bueti, Michele Fornaciai
The human brain is endowed with an intuitive sense of number allowing to perceive the approximate quantity of items in a scene, or “numerosity.” This ability is not limited to items distributed in space, but also to events unfolding in time and to the average numerosity of dynamic scenes. How the brain computes and…
Liangyou Zhang, Evi Hendrikx, Yizhen Wang, Surya Gayet + 2 more
Humans and many animals rapidly and accurately perceive numerosity, the number of objects, in a visual image. The numerosity of recently viewed images influences our perception of the current image’s numerosity: numerosity adaptation. How does numerosity adaptation affect responses to numerosity in the brain? Recent…
David C. Burr, Giovanni Anobile, Roberto Arrighi
It is now clear that most animals, including humans, possess an ability to rapidly estimate number. Some have questioned whether this ability arises from dedicated numerosity mechanisms, or is derived indirectly from judgements of density or other attributes. We describe a series of psychophysical experiments, largely…
Jacob M. Paul, Martijn van Ackooij, Tuomas C. ten Cate, Ben M. Harvey
Human early visual cortex response amplitudes monotonically increase with numerosity (object number), regardless of object size and spacing. However, numerosity is typically considered a high-level visual or cognitive feature, while early visual responses follow image contrast in the spatial frequency domain. We found…
Alessandro Benedetto, Roberto Arrighi, Elisa Castaldi
Numerosity perception enables us to quickly estimate the number of objects in a visual scene, a fundamental skill supporting efficient interaction with the environment. In this study, we tracked how the human brain transforms physical inputs into numerical percepts. Using EEG we measured the neural dynamics to assess…
Wei Liu, Jingguang Li, Yajun Zhao, Xinyu Xie + 1 more
Perceiving numerosity, the ability to rapidly estimate the number of discrete elements in a set or presented sequentially, is fundamental to our understanding of the surrounding environment, and serves as an important basis for advanced mathematical thinking. A series of studies have shown interest in how we estimate…
Leo D’Amato, Davide Nuzzi, Alberto Testolin, Ivilin Peev Stoianov + 2 more
Number sense is a core cognitive ability supporting various adaptive behaviors and is foundational for mathematical learning. In this study, we investigate its emergence in unsupervised generative models through the lens of rate-distortion theory (RDT), a normative framework for understanding information processing…
Marco Bertamini
There are many situations in which we interact with collections of objects, from a crowd of people to a bowl of blackberries. There is an experience of the quantity of these items, although not a precise number, and we have this impression quickly and effortlessly. It can be described as an expressive property of the…
Alberto Testolin
Numerosity perception is foundational to mathematical learning, but its computational bases are strongly debated. Some investigators argue that humans are endowed with a specialized system supporting numerical representation; others argue that visual numerosity is estimated using continuous magnitudes, such as density…
Leo Poom, Marcus Lindskog, Anders Winman, Ronald van den Berg + 1 more
'Katsumi Watanabe'] Humans can estimate numerosities-such as the number sheep in a flock-without deliberate counting. A number of biases have been identified in these estimates, which seem primarily rooted in the spatial organization of objects (grouping, symmetry, etc). Most previous studies on the number sense used…
Camilla Caponi, Elisa Castaldi, Paolo Antonino Grasso, Roberto Arrighi
Perceptual adaptation has been used to infer the existence of numerosity detectors, which allow humans to quickly estimate the number of objects in a scene. While adaptation was originally thought to affect numerosity perception regardless of the low-level features of the items, a recent study demonstrated that…
Jorge Yago Malo, Guido Marco Cicchini, Maria Concetta Morrone, Maria Luisa Chiofalo
'Maria Luisa Chiofalo'] Humans share with animals, both vertebrates and invertebrates, the capacity to sense the number of items in their environment already at birth. The pervasiveness of this skill across the animal kingdom suggests that it should emerge in very simple populations of neurons. Current modelling…
Kuinan Hou, Marco Zorzi, Alberto Testolin
magnitudes in natural scenes using computer vision Authors: ['Kuinan Hou' 'Marco Zorzi' 'Alberto Testolin'] Humans share with many animal species the ability to perceive and approximately represent the number of objects in visual scenes. This ability improves throughout childhood, suggesting that learning and…
Rijnder Wever, Tom F. H. Runia
Numerosity, the number of objects in a set, is a basic property of a given visual scene. Many animals develop the perceptual ability to subitize: the near-instantaneous identification of the numerosity in small sets of visual items. In computer vision, it has been shown that numerosity emerges as a statistical property…