scholarly journals Neuroethology of number sense across the animal kingdom

2021 ◽  
Vol 224 (6) ◽  
Author(s):  
Andreas Nieder
Keyword(s):  
Number Sense ◽  
Neural Basis ◽  
Numerical Competence ◽  
Promising Candidate ◽  
Neural Data ◽  
Number Representations ◽  
Different Types ◽  
Candidate Regions ◽  
Numerical Representations ◽  
Evolutionarily Stable

ABSTRACT Many species from diverse and often distantly related animal groups (e.g. monkeys, crows, fish and bees) have a sense of number. This means that they can assess the number of items in a set – its ‘numerosity’. The brains of these phylogenetically distant species are markedly diverse. This Review examines the fundamentally different types of brains and neural mechanisms that give rise to numerical competence across the animal tree of life. Neural correlates of the number sense so far exist only for specific vertebrate species: the richest data concerning explicit and abstract number representations have been collected from the cerebral cortex of mammals, most notably human and nonhuman primates, but also from the pallium of corvid songbirds, which evolved independently of the mammalian cortex. In contrast, the neural data relating to implicit and reflexive numerical representations in amphibians and fish is limited. The neural basis of a number sense has not been explored in any protostome so far. However, promising candidate regions in the brains of insects, spiders and cephalopods – all of which are known to have number skills – are identified in this Review. A comparative neuroscientific approach will be indispensable for identifying evolutionarily stable neuronal circuits and deciphering codes that give rise to a sense of number across phylogeny.

scholarly journals SATO–CRUTCHFIELD FORMULATION FOR SOME EVOLUTIONARY GAMES

2003 ◽  
Vol 14 (07) ◽  
pp. 963-971 ◽  
Author(s):  
E. AHMED ◽  
A. S. HEGAZI ◽  
A. S. ELGAZZAR
Keyword(s):  
Prisoner's Dilemma ◽  
Initial Conditions ◽  
Evolutionarily Stable Strategy ◽  
Prisoner’S Dilemma ◽  
Evolutionary Games ◽  
Theoretical Explanation ◽  
Battle Of The Sexes ◽  
Different Types ◽  
Evolutionarily Stable ◽  
Rules Of The Game

The Sato–Crutchfield equations are analytically and numerically studied. The Sato–Crutchfield formulation corresponds to losing memory. Then the Sato–Crutchfield formulation is applied for some different types of games including hawk–dove, prisoner's dilemma and the battle of the sexes games. The Sato–Crutchfield formulation is found not to affect the evolutionarily stable strategy of the ordinary games. But choosing a strategy becomes purely random, independent of the previous experiences, initial conditions, and the rules of the game itself. The Sato–Crutchfield formulation for the prisoner's dilemma game can be considered as a theoretical explanation for the existence of cooperation in a population of defectors.

scholarly journals Quantifying the signals contained in heterogeneous neural responses and determining their relationships with task performance

2014 ◽  
Vol 112 (6) ◽  
pp. 1584-1598 ◽  
Author(s):  
Marino Pagan ◽  
Nicole C. Rust
Keyword(s):  
Task Performance ◽  
Single Neuron ◽  
Weighted Sums ◽  
Neural Responses ◽  
Signal Modulation ◽  
Neural Data ◽  
Match To Sample ◽  
Neural Populations ◽  
Different Types ◽  
High Level

The responses of high-level neurons tend to be mixtures of many different types of signals. While this diversity is thought to allow for flexible neural processing, it presents a challenge for understanding how neural responses relate to task performance and to neural computation. To address these challenges, we have developed a new method to parse the responses of individual neurons into weighted sums of intuitive signal components. Our method computes the weights by projecting a neuron's responses onto a predefined orthonormal basis. Once determined, these weights can be combined into measures of signal modulation; however, in their raw form these signal modulation measures are biased by noise. Here we introduce and evaluate two methods for correcting this bias, and we report that an analytically derived approach produces performance that is robust and superior to a bootstrap procedure. Using neural data recorded from inferotemporal cortex and perirhinal cortex as monkeys performed a delayed-match-to-sample target search task, we demonstrate how the method can be used to quantify the amounts of task-relevant signals in heterogeneous neural populations. We also demonstrate how these intuitive quantifications of signal modulation can be related to single-neuron measures of task performance ( d′).

scholarly journals Comparative Analysis of Cognitive Characteristics of Young Adolescents with Artistic and Intellectual Giftedness

2020 ◽  
Vol 12 (3) ◽  
pp. 110-123
Author(s):  
E.I. Donii ◽  
N.B. Shumakova
Keyword(s):  
Information Processing ◽  
Processing Speed ◽  
Number Sense ◽  
Young Adolescents ◽  
Information Processing Speed ◽  
Cognitive Characteristics ◽  
Different Types ◽  
Intellectually Gifted ◽  
Artistically Gifted ◽  
Gifted Adolescents

The work is aimed at identifying specific manifestations of creativity and basic cognitive characteristics in young adolescents with artistic and intellectual giftedness. The relevance of the study is due to lack of study of the issue of cognitive manifestations of different types of giftedness in early adolescence, in which the issue of specialization of education is often resolved. The study involved 54 intellectually gifted adolescents (M = 11.4 years old) and 32 artistically gifted peers (M = 11.2 years old). The study used the following methods: a computerize d battery of test tasks for studying bas ic cognitive characteristics (“number sense”, visua l working memory and information processing speed), "Raven’s Progressive Matrixes”, “Verbally-figura l creativity test”, drawing tests of Urban and "Horizon Line ". The results confirm the hypothesis about the specificity of creativity in younger adolescents with different types of giftedness (intellectual and artistic). Intellectually gifted younger adolescents show higher rates of divergent verbal creativity compared to their artistically gifted peers; and artistically gifted younger adolescents surpass their intellectually gifted peers in terms of picturesque (figurative) creativity and are distinguished by their highquality originality, revealing a high emotional expressiveness and creative approach to the implementation of the plan. No statistically significant intergroup differences in the basic indicators of cognitive development and general intelligence were found, although artistically gifted adolescents better than their intellectually gifted peers compare asymmetrically expressed amounts (“number sense”), but they are inferior in terms of information processing speed.

scholarly journals Detection of mRNA by Reverse Transcription-PCR as an Indicator of Viability in Escherichia coliCells

1998 ◽  
Vol 64 (4) ◽  
pp. 1313-1318 ◽  
Author(s):  
G. E. C. Sheridan ◽  
C. I. Masters ◽  
J. A. Shallcross ◽  
B. M. Mackey
Keyword(s):  
Reverse Transcription ◽  
Room Temperature ◽  
Cellular Viability ◽  
Ethanol Treatment ◽  
Rt Pcr ◽  
Promising Candidate ◽  
Mrna Targets ◽  
Reverse Transcription Pcr ◽  
Different Types ◽  
The Relationship

ABSTRACT The relationship between the detection of mRNA and cellular viability in Escherichia coli was investigated in cells killed by heat or ethanol. Reverse transcription-PCR (RT-PCR) methods were developed for detecting mRNA from rpoH,groEL, and tufA genes. mRNA from all three genes was detected immediately after the cells had been killed by heat or ethanol but gradually disappeared with time when dead cells were held at room temperature. In heat-killed cells, some mRNA targets became undetectable after 2 to 16 h, whereas after ethanol treatment, mRNA was still detected after 16 h. In contrast, 16S rRNA was detected by RT-PCR in all samples containing dead cells and did not disappear during a subsequent incubation of 16 h at room temperature. Of the different types of nucleic acid, mRNA is the most promising candidate for an indicator of viability in bacteria, but its persistence in dead cells depends on the inactivating treatment and subsequent holding conditions.

scholarly journals When the Brain Leaves the Scanner and Enters the Clinic

2018 ◽  
Vol 45 (3) ◽  
pp. 227-243 ◽  
Author(s):  
Anthony Barnett ◽  
Ella Dilkes-Frayne ◽  
Michael Savic ◽  
Adrian Carter
Keyword(s):  
Drug Treatment ◽  
Medical Treatment ◽  
Neural Basis ◽  
Treatment Providers ◽  
Immoral Behavior ◽  
Brain Recovery ◽  
Different Types ◽  
Moral Condition ◽  
Moral Discourses ◽  
The Brain

Addiction neuroscience promises to uncover the neural basis of addiction by mapping changes in the “diseased brains” of people with “drug addictions.” It hopes to offer revolutionary treatments for addiction and reduce the stigma experienced by those seeking treatment for a medical, rather than moral, condition. While the promises of addiction neuroscience have received considerable attention, relatively few studies have examined how neuroscientific discourses and promises play out in drug treatment settings. Instead of asking how neuroscience might measure or treat a preexisting addiction “problem,” we draw on poststructuralist ideas to trace how neuroscientific discourses produce addiction as a certain type of “problem” and the effects of these particular problematizations. Based on interviews with a range of different types of treatment providers working in Victoria, Australia, we discuss three themes that reveal neuroscientific discourses at work: (1) constituting pathological subjects, (2) neuroplasticity and “recovery,” and (3) the alleviation of guilt and shame via references to the “diseased brain.” On the basis of our analysis, we argue that dominant neuroscientific discourses produce patients as pathologized subjects, requiring medical treatment. We also contend that the intersection of neuroscientific and recovery discourses enacts “recovery” in terms of brain “recovery” through references to neuroplasticity. Further, when neuroscientific and moral discourses intersect, addicted subjects are absolved from the guilt associated with immoral behavior emerging from a “hijacked brain.” We conclude by emphasizing the need for future critical work to explore the complex ways in which neuroscientific discourses operate in localized care ecologies.

scholarly journals Symmetrization, Mirroring and External Reality: An ‘Inner’ Perspective

2020 ◽  
pp. 1-16
Author(s):  
Rosapia Lauro Grotto
Keyword(s):  
Social Interactions ◽  
Clinical Evidence ◽  
Human Mind ◽  
Emotional States ◽  
Neural Basis ◽  
External Reality ◽  
Psychoanalytic Literature ◽  
Different Types ◽  
Neuro Imaging ◽  
The Mind

In the last two decades, mirroring systems have been detected in the monkey and in the human brain. The mirroring mechanisms have been considered as the neural basis for social cognition and interpersonal reactivity, and they have been assumed to support imitation, sharing of emotional states and empathy. Here I would like to compare ‘mirroring phenomena’ to ‘symmetrization phenomena’. In psychoanalytic literature, the construct of symmetrization has been proposed in the context of the Bi-Logic theory by Matte Blanco in 1975, on the basis of clinical evidence obtained in the psychoanalytical setting and following a theoretical analysis derived from the Freudian distinction between Primary and Secondary Processes. I will consider two different types of behaviours, empathic social interactions and the creation of transitional objects and spaces as defined by Winnicott in order to argue that symmetrization, in Matte Blanco’s terms, cannot be reduced to mirroring. I will then sketch a hypothesis on the interplay between the symmetric aspects of the mind and external reality in the development of higher relational functions of humans, also taking playing, arts and creativity into account. Finally I will describe the paradigmatic shift in neuro-imaging studies that was introduced with the discovery of the ‘Default Mode Network’ and its potential relevance in the research on the symmetric and asymmetric aspects of the human mind.

Characteristics of a Geobacillus sp. as an Enhanced Oil Recovery Material

2012 ◽  
Vol 496 ◽  
pp. 542-545
Author(s):  
Xiang Ping Kong
Keyword(s):  
Crude Oil ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Sewage Treatment ◽  
Core Flooding ◽  
Treatment Technology ◽  
Promising Candidate ◽  
Different Types ◽  
Displacement Experiments ◽  
Original Oil In Place

The enhanced oil recovery characteristics of a Geobacillus sp. was investigated by shake flask experiments, blind-tube oil displacement experiments and core flooding tests. The strain exhibited good properties such as resisting high temperature, taking different types of crude oil as the sole carbon source, reducing the viscosity of crude oil, emulsifying and dispersing crude oil or liquid wax. The oil in the dead area could be effectively driven out by the strain, and the oil recovery of original oil in place had been increased by 12.9-15.9% after 5 treatments in 50 days by adopting air-assistant technique (air/liquid 10:1, v/v) due to the synergistic effect of the bacteria and their metabolites such as biogas and biosurfactants. The strain seems to be a promising candidate for microbial enhanced oil recovery and underground sewage treatment technology.

Early Childhood Corner: Laying the Foundation for Computational Fluency in Early Childhood

2003 ◽  
Vol 9 (6) ◽  
pp. 306-309
Author(s):  
Sharon Griffin
Keyword(s):  
Early Childhood ◽  
Mathematics Teaching ◽  
Mathematical Knowledge ◽  
Number Sense ◽  
Deep Understanding ◽  
Dominant Focus ◽  
Computational Fluency ◽  
Types Of Knowledge ◽  
Recent Recommendation ◽  
Different Types

Educators tend to think of computational fluency and number sense as two different types of mathematical knowledge. Computational fluency seems to entail a well-practiced and efficient use of procedures to compute how many items are in a set or how many there will be if sets are joined or separated. Number sense seems related to a deep understanding of the meaning of numbers. Through the phrasing of its major curriculum recommendations, NCTM may have unintentionally reinforced the tendency to think of these two types of knowledge as distinct or as opposed in some fundamental way. An oppositional frame of mind about these forms of knowledge is prompted by the suggestion that mathematics teaching should move away from an emphasis on facts and procedures and toward a focus on number sense (NCTM 1989), as well as a more recent recommendation that number sense should remain the dominant focus in mathematics teaching but computational fluency should not be neglected (NCTM 2000). One begins to wonder whether the two types of knowledge are acquired in different contexts and whether they require different methods of teaching. Nothing could be further from the truth.

The neural basis of different types of synesthesia

2013 ◽  
Vol 26 (1-2) ◽  
pp. 43
Author(s):  
Romke Rouw ◽  
Steven Scholte
Keyword(s):  
Neural Basis ◽  
Different Types

scholarly journals The multifaceted abstract brain

2018 ◽  
Vol 373 (1752) ◽  
pp. 20170122 ◽  
Author(s):  
Rutvik H. Desai ◽  
Megan Reilly ◽  
Wessel van Dam
Keyword(s):  
Emotional Processing ◽  
Conceptual System ◽  
Abstract Concepts ◽  
Event Representation ◽  
Social Emotional ◽  
Neural Basis ◽  
Different Types ◽  
Meta Analyses ◽  
Event Based ◽  
Motor Representations

Abstract concepts play a central role in human behaviour and constitute a critical component of the human conceptual system. Here, we investigate the neural basis of four types of abstract concepts, examining their similarities and differences through neuroimaging meta-analyses. We examine numerical and emotional concepts, and two higher-order abstract processes, morality judgements and theory of mind. Three main findings emerge. First, representation of abstract concepts is more widespread than is often assumed. Second, representations of different types of abstract concepts differ in important respects. Each of the domains examined here was associated with some unique areas. Third, some areas were commonly activated across domains and included inferior parietal, posterior cingulate and medial prefrontal cortex. We interpret these regions in terms of their role in episodic recall, event representation and social–emotional processing. We suggest that different types of abstract concepts can be represented and grounded through differing contributions from event-based, interoceptive, introspective and sensory-motor representations. The results underscore the richness and diversity of abstract concepts, argue against single-mechanism accounts for representation of all types of abstract concepts and suggest mechanisms for their direct and indirect grounding. This article is part of the theme issue ‘Varieties of abstract concepts: development, use and representation in the brain’.

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