scholarly journals Progress without exclusion in the search for an evolutionary basis of music

2021 ◽  
Vol 44 ◽  
Author(s):  
Daniel L. Bowling ◽  
Marisa Hoeschele ◽  
Jacob C. Dunn
Keyword(s):  
Evolutionary Biology ◽  
Alternative Hypotheses ◽  
Strong Contender

Abstract Mehr et al.'s hypothesis that the origins of music lie in credible signaling emerges here as a strong contender to explain early adaptive functions of music. Its integration with evolutionary biology and its specificity mark important contributions. However, much of the paper is dedicated to the exclusion of popular alternative hypotheses, which we argue is unjustified and premature.

Pleasure

2017 ◽  
Author(s):  
Alfonso Troisi
Keyword(s):  
Evolutionary Biology ◽  
Sexual Pleasure ◽  
Female Orgasm ◽  
Sexual Stimuli ◽  
Behavioral Choices ◽  
Evolutionary Studies ◽  
Alternative Hypotheses ◽  
Hedonic Capacity ◽  
Neurobiological Research ◽  
Female Responses

Contemporary neurobiological research has greatly improved our understanding of brain mechanisms that regulate hedonic response and the environmental stimuli that trigger physical and mental pleasure. However, to explain what purpose pleasure serves, we need to look at the problem from the perspective of evolutionary biology. Focusing on a specific type of pleasure, sexual pleasure, this chapter introduces several evolutionary studies that show how the variation in pleasurable experiences becomes understandable when hedonic capacity is viewed as an inner navigator that evolved to guide individuals toward the most adaptive behavioral choices. As a case in point, the alternative hypotheses that have been advanced to explain the evolution of female orgasm (the adaptive versus the byproduct hypothesis) are discussed. The findings of recent studies exploring the complexity of human sexual response and the striking sex differences that distinguish male and female responses to sexual stimuli are also presented.

Gene trees: A powerful tool for exploring the evolutionary biology of species and speciation

2000 ◽  
Vol 15 (3) ◽  
pp. 211-222 ◽  
Author(s):  
Alan R. Templeton ◽  
Stephanie D. Maskas ◽  
Mitchell B. Cruzan
Keyword(s):  
Evolutionary Biology ◽  
Gene Trees

The Relationship of Interrogative Suggestibility to Memory and Attention

2006 ◽  
Vol 20 (2) ◽  
pp. 79-93 ◽  
Author(s):  
R.C. Howard ◽  
A. Chaiwutikornwanich
Keyword(s):  
Individual Differences ◽  
Short Story ◽  
Oddball Paradigm ◽  
Memory Processes ◽  
Memory And Attention ◽  
Irrelevant Distractors ◽  
Alternative Hypotheses ◽  
Visual Oddball Paradigm ◽  
Interrogative Suggestibility ◽  
Task Irrelevant

This study combined an individual differences approach to interrogative suggestibility (IS) with ERP recordings to examine two alternative hypotheses regarding the source of individual differences in IS: (1) differences in attention to task-relevant vis-à-vis task-irrelevant stimuli, and (2) differences in one or more memory processes, indexed by ERP old/new effects. Sixty-five female participants underwent an ERP recording during the 50 min interval between immediate and delayed recall of a short story. ERPs elicited by pictures that either related to the story (“old”), or did not relate to the story (“new”), were recorded using a three-stimulus visual oddball paradigm. ERP old/new effects were examined at selected scalp regions of interest at three post-stimulus intervals: early (250-350 ms), middle (350-700 ms), and late (700-1100 ms). In addition, attention-related ERP components (N1, P2, N2, and P3) evoked by story-relevant pictures, story-irrelevant pictures, and irrelevant distractors were measured from midline electrodes. Late (700-1100 ms) frontal ERP old/new differences reflected individual differences in IS, while early (250-350 ms) and middle latency (350-700 ms) ERP old/new differences distinguished good from poor performers in memory and oddball tasks, respectively. Differences in IS were not reflected in ERP indices of attention. Results supported an account of IS as reflecting individual differences in postretrieval memory processes.

Darwin's two competing phylogenetic trees: marsupials as ancestors or sister taxa?

2012 ◽  
Vol 39 (2) ◽  
pp. 217-233 ◽  
Author(s):  
J. David Archibald
Keyword(s):  
Fossil Record ◽  
Evolutionary Biology ◽  
Phylogenetic Trees ◽  
Charles Darwin ◽  
The Other ◽  
Charles Lyell ◽  
Single Origin ◽  
Molecular Studies ◽  
Richard Owen ◽  
First Time

Studies of the origin and diversification of major groups of plants and animals are contentious topics in current evolutionary biology. This includes the study of the timing and relationships of the two major clades of extant mammals – marsupials and placentals. Molecular studies concerned with marsupial and placental origin and diversification can be at odds with the fossil record. Such studies are, however, not a recent phenomenon. Over 150 years ago Charles Darwin weighed two alternative views on the origin of marsupials and placentals. Less than a year after the publication of On the origin of species, Darwin outlined these in a letter to Charles Lyell dated 23 September 1860. The letter concluded with two competing phylogenetic diagrams. One showed marsupials as ancestral to both living marsupials and placentals, whereas the other showed a non-marsupial, non-placental as being ancestral to both living marsupials and placentals. These two diagrams are published here for the first time. These are the only such competing phylogenetic diagrams that Darwin is known to have produced. In addition to examining the question of mammalian origins in this letter and in other manuscript notes discussed here, Darwin confronted the broader issue as to whether major groups of animals had a single origin (monophyly) or were the result of “continuous creation” as advocated for some groups by Richard Owen. Charles Lyell had held similar views to those of Owen, but it is clear from correspondence with Darwin that he was beginning to accept the idea of monophyly of major groups.

Myanmar’s Transition and the Resurgence of Buddhist Nationalism

Asian Survey ◽  
2020 ◽  
Vol 60 (6) ◽  
pp. 1072-1089
Author(s):  
Marie-Eve Reny
Keyword(s):  
Primary Reason ◽  
Military Rule ◽  
Nationalist Movement ◽  
Cast Doubt ◽  
National League ◽  
Strong Contender

Myanmar began a transition in 2011 that ended almost 50 years of military rule. During the transition, a nationalist movement called for protecting Buddhism from an “Islamic threat.” Anti-Islam nationalism was not new in Burmese history, yet the timing of its resurgence deserves attention. I argue that the incumbents’ anticipated electoral weakness in transitional elections was the primary reason for its resurgence. The incumbents sought to maximize societal support, and they faced a strong contender, the National League for Democracy, whose probability of winning was high. Social opposition was also significant by the time military rule ended. In a campaign to pass reforms to better “protect” Buddhism, the incumbents used monks to cast doubt on the NLD’s ability to represent Buddhist interests and to recruit former regime opponents who were nationalists. The incumbents garnered wide support for the reforms, yet it was insufficient for an electoral victory.

Homology, Genes, and Evolutionary Innovation

2014 ◽  
Author(s):  
Günter P. Wagner
Keyword(s):  
Evolutionary Biology ◽  
Regulatory Networks ◽  
Biological Diversity ◽  
Cell Types ◽  
Origin And Evolution ◽  
Major Transitions ◽  
Form And Function ◽  
Historical Continuity ◽  
Evolutionary Innovation ◽  
Character Identity

Homology—a similar trait shared by different species and derived from common ancestry, such as a seal's fin and a bird's wing—is one of the most fundamental yet challenging concepts in evolutionary biology. This book provides the first mechanistically based theory of what homology is and how it arises in evolution. The book argues that homology, or character identity, can be explained through the historical continuity of character identity networks—that is, the gene regulatory networks that enable differential gene expression. It shows how character identity is independent of the form and function of the character itself because the same network can activate different effector genes and thus control the development of different shapes, sizes, and qualities of the character. Demonstrating how this theoretical model can provide a foundation for understanding the evolutionary origin of novel characters, the book applies it to the origin and evolution of specific systems, such as cell types; skin, hair, and feathers; limbs and digits; and flowers. The first major synthesis of homology to be published in decades, this book reveals how a mechanistically based theory can serve as a unifying concept for any branch of science concerned with the structure and development of organisms, and how it can help explain major transitions in evolution and broad patterns of biological diversity.

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