scholarly journals What is comparable in comparative cognition?

2012 ◽  
Vol 367 (1603) ◽  
pp. 2677-2685 ◽  
Author(s):  
Lars Chittka ◽  
Stephen J. Rossiter ◽  
Peter Skorupski ◽  
Chrisantha Fernando
Keyword(s):  
Cognitive Functions ◽  
Cognitive Abilities ◽  
Comparative Cognition ◽  
Molecular Genetic ◽  
Parallel Evolution ◽  
Cognitive Capacity ◽  
Genetic Changes ◽  
Hereditary Variation ◽  
The Face ◽  
Cognitive Traits

To understand how complex, or ‘advanced’ various forms of cognition are, and to compare them between species for evolutionary studies, we need to understand the diversity of neural–computational mechanisms that may be involved, and to identify the genetic changes that are necessary to mediate changes in cognitive functions. The same overt cognitive capacity might be mediated by entirely different neural circuitries in different species, with a many-to-one mapping between behavioural routines, computations and their neural implementations. Comparative behavioural research needs to be complemented with a bottom-up approach in which neurobiological and molecular-genetic analyses allow pinpointing of underlying neural and genetic bases that constrain cognitive variation. Often, only very minor differences in circuitry might be needed to generate major shifts in cognitive functions and the possibility that cognitive traits arise by convergence or parallel evolution needs to be taken seriously. Hereditary variation in cognitive traits between individuals of a species might be extensive, and selection experiments on cognitive traits might be a useful avenue to explore how rapidly changes in cognitive abilities occur in the face of pertinent selection pressures.

A bigger brain for a more complex environment

2020 ◽  
Vol 31 (8) ◽  
pp. 803-816
Author(s):  
Umberto di Porzio
Keyword(s):  
Human Brain ◽  
Cognitive Abilities ◽  
Molecular Genetic ◽  
Adult Size ◽  
Genetic Changes ◽  
Cultural Challenges ◽  
Birth Canal ◽  
Newborn Brain ◽  
Neuronal Interactions ◽  
The Brain

AbstractThe environment increased complexity required more neural functions to develop in the hominin brains, and the hominins adapted to the complexity by developing a bigger brain with a greater interconnection between its parts. Thus, complex environments drove the growth of the brain. In about two million years during hominin evolution, the brain increased three folds in size, one of the largest and most complex amongst mammals, relative to body size. The size increase has led to anatomical reorganization and complex neuronal interactions in a relatively small skull. At birth, the human brain is only about 20% of its adult size. That facilitates the passage through the birth canal. Therefore, the human brain, especially cortex, develops postnatally in a rich stimulating environment with continuous brain wiring and rewiring and insertion of billions of new neurons. One of the consequence is that in the newborn brain, neuroplasticity is always turned “on” and it remains active throughout life, which gave humans the ability to adapt to complex and often hostile environments, integrate external experiences, solve problems, elaborate abstract ideas and innovative technologies, store a lot of information. Besides, hominins acquired unique abilities as music, language, and intense social cooperation. Overwhelming ecological, social, and cultural challenges have made the human brain so unique. From these events, as well as the molecular genetic changes that took place in those million years, under the pressure of natural selection, derive the distinctive cognitive abilities that have led us to complex social organizations and made our species successful.

scholarly journals Integrative Comparative Cognition: Can Neurobiology and Neurogenomics Inform Comparative Analyses of Cognitive Phenotype?

2020 ◽  
Vol 60 (4) ◽  
pp. 925-928
Author(s):  
Sabrina S Burmeister ◽  
Yuxiang Liu
Keyword(s):  
Cognitive Processes ◽  
Cognitive Abilities ◽  
Molecular Mechanisms ◽  
Comparative Cognition ◽  
Parallel Evolution ◽  
Difficult Problem ◽  
Cognitive Phenotype ◽  
Molecular Approaches ◽  
Patterns And Processes

Synopsis A long-standing question in animal behavior is what are the patterns and processes that shape the evolution of cognition? One effective way to address this question is to study cognitive abilities in a broad spectrum of animals. While comparative psychologists have traditionally focused on a narrow range of organisms, today they may work with any number of species, from frogs to birds or bees. This broader range of study species has greatly enriched our understanding of the diversity of cognitive processes among animals. Yet, this diversity has highlighted the fundamental challenge of comparing cognitive processes across animals. An analysis of the neural and molecular mechanisms of cognition may be necessary to solve this problem. The goal of our symposium was to bring together speakers studying a range of species to gain a broadly integrative perspective on cognition while at the same time considering the potentially important role of neurobiology and genomics in addressing the difficult problem of comparing cognition across species. For example, work by MaBouDi et al. indicates that neural constraints on computing power may impact the cognitive processes underlying numerical discrimination in bees. A presentation by Lara LaDage demonstrated how neurobiology can be used to better understand cognition and its evolution in reptiles while Edwards et al. identify the cerebellum as potentially important in the performance of the complex process of nest building. We see that molecular approaches highlight the contributions of the prefrontal cortex and hippocampus to cognitive phenotype across vertebrates while, at the same time, identifying the genes and cellular processes that may contribute to evolution of cognition. The potentially important role of neurogenesis and synaptic plasticity emerge clearly from such studies. Still unanswered is the question of whether molecular tools will contribute to our ability to discriminate convergent/parallel evolution from homology in the evolution of cognitive phenotype.

scholarly journals Chronic Alcohol Use Induces Molecular Genetic Changes in the Dorsomedial Thalamus of People with Alcohol-Related Disorders

2021 ◽  
Vol 11 (4) ◽  
pp. 435
Author(s):  
Andreas-Christian Hade ◽  
Mari-Anne Philips ◽  
Ene Reimann ◽  
Toomas Jagomäe ◽  
Kattri-Liis Eskla ◽  
...  
Keyword(s):  
Alcohol Use ◽  
Molecular Genetic ◽  
Brain Structures ◽  
Thalamic Nuclei ◽  
Genetic Changes ◽  
Molecular Changes ◽  
Gabaergic Neurotransmission ◽  
And Control ◽  
Upregulated Genes

The Mediodorsal (MD) thalamus that represents a fundamental subcortical relay has been underrepresented in the studies focusing on the molecular changes in the brains of subjects with alcohol use disorder (AUD). In the current study, MD thalamic regions from AUD subjects and controls were analyzed with Affymetrix Clariom S human microarray. Long-term alcohol use induced a significant (FDR ≤ 0.05) upregulation of 2802 transcripts and downregulation of 1893 genes in the MD thalamus of AUD subjects. A significant upregulation of GRIN1 (glutamate receptor NMDA type 1) and FTO (alpha-ketoglutarate dependent dioxygenase) was confirmed in western blot analysis. Immunohistochemical staining revealed similar heterogenous distribution of GRIN1 in the thalamic nuclei of both AUD and control subjects. The most prevalent functional categories of upregulated genes were related to glutamatergic and GABAergic neurotransmission, cellular metabolism, and neurodevelopment. The prevalent gene cluster among down-regulated genes was immune system mediators. Forty-two differentially expressed genes, including FTO, ADH1B, DRD2, CADM2, TCF4, GCKR, DPP6, MAPT and CHRH1, have been shown to have strong associations (FDR p < 10−8) with AUD or/and alcohol use phenotypes in recent GWA studies. Despite a small number of subjects, we were able to detect robust molecular changes in the mediodorsal thalamus caused by alcohol emphasizing the importance of deeper brain structures such as diencephalon, in the development of AUD-related dysregulation of neurocircuitry.

Improvement in Cognitive Abilities, Mental and Emotional Well-being of Teenagers following a Meditation Retreat: An Open-Trial pilot study

2021 ◽  
Vol 11 ◽  
Author(s):  
Divya Kanchibhotla ◽  
Saumya Subramanian ◽  
Shashank Kulkarni
Keyword(s):  
Cognitive Abilities ◽  
Well Being ◽  
Poor Mental Health ◽  
Cognitive Capacity ◽  
World Health ◽  
Repeated Measure ◽  
Post Intervention ◽  
Meditation Retreat ◽  
Mental Well Being

Background: Background: Today’s teenagers face several challenges that result in poor mental health, depression and anxiety. Several studies in the past decade have explored meditation as an adjunctive therapy for mental illness however the long term residual benefits of meditation have rarely been studied. Objective: The aim of the study was to investigate the benefits of a four day meditation retreat on cognitive abilities, mental and emotional well-being of teenagers. Methods: 303 teenagers participated in this study. Cognitive abilities of the students were measured using theSix letter cancellation test (SLCT). Mental and emotional well-being was measured using World Health Organization Well-being index (WHO-5) and Strength and Difficulties questionnaire (SDQ) respectively. Data analysis was performed using paired sample t-test and repeated measure ANOVA. Results: Teenagers demonstrated a 33% increase in average accuracy for SLCT post intervention. WHO-5 mental well-being index scores also increased significantly (p <1). The participants experienced significant reduction in emotional problems and hyperactivity as measured by SDQ. The benefits of the retreat continued to persist, when measured after 40 days of the intervention. Conclusion: A well-structured meditation retreat has significant and long term benefits on teenagers’ mental well-being, emotional stability and cognitive capacity.

scholarly journals Developmental Fractionation of Working Memory and Response Inhibition During Childhood

2007 ◽  
Vol 54 (1) ◽  
pp. 30-37 ◽  
Author(s):  
Satoshi Tsujimoto ◽  
Mariko Kuwajima ◽  
Toshiyuki Sawaguchi
Keyword(s):  
Working Memory ◽  
Prefrontal Cortex ◽  
Response Inhibition ◽  
Cognitive Functions ◽  
Cognitive Abilities ◽  
Childhood Development ◽  
Neural Systems ◽  
Older Children ◽  
Efficient Processing ◽  
The Relationship

Abstract. The lateral prefrontal cortex (LPFC) plays a major role in both working memory (WM) and response inhibition (RI), which are fundamental for various cognitive abilities. We explored the relationship between these LPFC functions during childhood development by examining the performance of two groups of children in visuospatial and auditory WM tasks and a go/no-go RI task. In the younger children (59 5- and 6-year-olds), performance on the visuospatial WM task correlated significantly with that in the auditory WM task. Furthermore, accuracy in these tasks correlated significantly with performance on the RI task, particularly in the no-go trials. In contrast, there were no significant correlations among those tasks in older children (92 8- and 9-year-olds). These results suggest that functional neural systems for visuospatial WM, auditory WM, and RI, especially those in the LPFC, become fractionated during childhood, thereby enabling more efficient processing of these critical cognitive functions.

Plato on Perception and ‘Commons’

1990 ◽  
Vol 40 (1) ◽  
pp. 148-175 ◽  
Author(s):  
Allan Silverman
Keyword(s):  
Cognitive Capacity ◽  
The Face

On the face of it, Plato's treatment of aisthesis is decidedly ambiguous. Sometimes he treats aisthesis as a faculty which, though distinct from all rational capacities, is nonetheless capable of forming judgments such as ‘This stick is bent’ or ‘The same thing is hard and soft’. In the Theaetetus, however, he appears to separate aisthesis from judgment, isolating the former from all prepositional, identificatory and recognitional capacities. The dilemma is easily expressed: Is perception a judgmental or cognitive capacity, or is it a non-judgmental, non-cognitive capacity? If the former, how does perception differ from belief? If the latter, is perception a faculty of the rational or irrational soul? Not surprisingly, the topic has received much scrutiny over the years. And equally unsurprisingly, the debate has turned as much on what it means for a capacity to be judgmental, cognitive, non-judgmental or non-cognitive, as on whether Plato says that it is of either kind.

Molecular Genetic Changes in Alveolar Soft Part Sarcoma

1998 ◽  
Vol 18 (6) ◽  
pp. 529-543
Author(s):  
Agnes S. Chan ◽  
Jeremy A. Squire ◽  
Paul Thorner ◽  
Maria Zielenska
Keyword(s):  
Soft Part ◽  
Molecular Genetic ◽  
Alveolar Soft Part Sarcoma ◽  
Genetic Changes

scholarly journals Using Touchscreen Equipped Operant Chambers to Study Comparative Cognition. Benefits, Limitations, and Advice

2020 ◽  
Author(s):  
BM Seitz ◽  
KB McCune ◽  
M MacPherson ◽  
L Bergeron ◽  
AP Blaisdell ◽  
...  
Keyword(s):  
Open Source Software ◽  
Animal Behavior ◽  
Infinite Number ◽  
Cognitive Abilities ◽  
Comparative Cognition ◽  
Model Species ◽  
Test Animal ◽  
Advantages And Disadvantages ◽  
Report Data ◽  
Behavior And Cognition

AbstractOperant chambers are small enclosures used to test animal behavior and cognition. While traditionally reliant on simple technologies for presenting stimuli (e.g., lights and sounds) and recording responses made to basic manipulanda (e.g., levers and buttons), an increasing number of researchers are beginning to use Touchscreen-equipped Operant Chambers (TOCs). These TOCs have obvious advantages, namely by allowing researchers to present a near infinite number of stimuli as well as increased flexibility in the types of responses that can be made and recorded. Here, we trained wild-caught adult and juvenile great-tailed grackles (Quiscalus mexicanus) to complete experiments using a TOC. We have learned much from these efforts, and outline the advantages and disadvantages of these two approaches. We report data from our training sessions and discuss important modifications we made to facilitate animal engagement and participation in various tasks. Finally, we provide a “training guide” for creating experiments using PsychoPy, a free and open-source software that we have found to be incredibly useful during these endeavors. This article, therefore, should serve as a useful resource to those interested in switching to or maintaining a TOC, or who similarly wish to use a TOC to test the cognitive abilities of non-model species or wild-caught individuals.

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