Behavioral and brain asymmetries in primates: a preliminary evaluation of two evolutionary hypotheses
TL;DR: The evidence that genes play specific roles in determining left–right differences in anatomical and functional asymmetries in primates is discussed and the hypothesis that hemispheric specialization evolved as a by‐product of increasing brain size relative to the surface area of the corpus callosum in different primate species is considered.
read more
Abstract: Contrary to many historical views, recent evidence suggests that species-level behavioral and brain asymmetries are evident in nonhuman species. Here, we briefly present evidence of behavioral, perceptual, cognitive, functional, and neuroanatomical asymmetries in nonhuman primates. In addition, we describe two historical accounts of the evolutionary origins of hemispheric specialization and present data from nonhuman primates that address these specific theories. Specifically, we first discuss the evidence that genes play specific roles in determining left-right differences in anatomical and functional asymmetries in primates. We next consider and present data on the hypothesis that hemispheric specialization evolved as a by-product of increasing brain size relative to the surface area of the corpus callosum in different primate species. Last, we discuss some of the challenges in the study of hemispheric specialization in primates and offer some suggestions on how to advance the field.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
The Difficult Integration between Human and Animal Studies on Emotional Lateralization: A Perspective Article.
TL;DR: In this paper, the authors analyze components and stages of the processing of emotions to distinguish those which point to a continuum between humans and many animal species, from those which suggest a similarity only between humans, such as great apes.
11
Human cerebral evolution and the clinical syndrome of amyotrophic lateral sclerosis.
TL;DR: The adult neurodegenerative disorder amyotrophic lateral sclerosis is unmistakeable from clinical descriptions now more than a century old, and the relative rarity of its targeted disintegration within the spectrum of neocortical disorders encapsulates a fundamental conundrum of understanding selective vulnerability in cerebral Neurodegeneration.
11
Asymmetrical Electroencephalographic Change of Human Brain During Sleep Onset Period
Doo-Heum Park,Chul-Jin Shin +1 more
TL;DR: During the sleep onset period, power spectral asymmetry of the brain showed a different pattern from the wakeful stage, which may suggest a reversal of the left hemispheric dominance during sleep.
Laterality and hemispheric specialization of self-face recognition
TL;DR: A review of self-face recognition from a laterality perspective can be found in this article , where the authors briefly revisit the pioneering roots of this work by Sperry, Zaidel & Zaidhel, and focus on the important body of neuroimaging literature on self face recognition it has inspired.
9
Neuroanatomical asymmetries in nonhuman primates in the homologs to Broca's and Wernicke's areas: a mini-review
TL;DR: A brief summary of findings on brain asymmetries in nonhuman primates in brain regions considered to the homolog's to Broca's and Wernicke's area is presented in this article .
References
Multipoint Quantitative-Trait Linkage Analysis in General Pedigrees
Laura Almasy,John Blangero +1 more
TL;DR: It is shown how variance-component linkage methods can be used in pedigrees of arbitrary size and complexity, and a general framework for multipoint identity-by-descent (IBD) probability calculations is developed.
Handedness and hemispheric language dominance in healthy humans.
Stefan Knecht,Bianca Dräger,Michael Deppe,L. Bobe,Hubertus Lohmann,Agnes Flöel,Erich Bernd Ringelstein,Henning Henningsen +7 more
TL;DR: The results clearly demonstrate that the relationship between handedness and language dominance is not an artefact of cerebral pathology but a natural phenomenon.
Mapping brain asymmetry
Arthur W. Toga,Paul M. Thompson +1 more
TL;DR: Brain-mapping approaches show great promise for assessing factors that modulate cognitive specialization in the brain, including the ontogeny, phylogeny and genetic determinants of brain asymmetry.
1.5K
Hand and sex differences in the isthmus and genu of the human corpus callosum. A postmortem morphological study
TL;DR: The midsagittal area of the corpus callosum was measured in its entirety and in seven subdivisions in a sample of 50 brains consecutively obtained from autopsies of individuals who had neuropsychological testing before death.
1.4K
Fiber composition of the human corpus callosum.
TL;DR: Across subjects, the overall density of callosal fibers had no significant correlation withcallosal area and an increased callosal area indicated an increased total number of fibers crossing through, and this was only true for small diameter fibers, whose large majority is believed to interconnect association cortex.
1.3K