Bird song and speech

Evo-devo, deep homology and FoxP2: implications for the evolution of speech and language

Excerpt: “Particular single nucleotide polymorphisms are associated with core deficits of children with specific language impairment and also coincide with language delays in autistic children [120]. In songbirds, CNTNAP2 is differentially expressed in some song control nuclei, but whether FoxP2 regulates CNTNAP2 in songbirds has not yet been addressed [121]. These findings are encouraging in the light of potential deep homologies between human speech and bird song.”

My comment: Bird song and speech homologies now extend from microbes to insects and from birds to man via an unbroken biophysically constrained hierarchy of nutrient-dependent pheromone-controlled ecological adaptations.

Alternatively, constraint-breaking mutations may link morphological and behavioral phenotypes across species. However, there is no model or model organism that can be used to support those assertions. That’s why some researchers consider those assertions to be nothing more than pseudoscientific nonsense, since no biologically-based experimental evidence supports such ideas.

About James V. Kohl 1308 Articles
James Vaughn Kohl was the first to accurately conceptualize human pheromones, and began presenting his findings to the scientific community in 1992. He continues to present to, and publish for, diverse scientific and lay audiences, while constantly monitoring the scientific presses for new information that is relevant to the development of his initial and ongoing conceptualization of human pheromones. Recently, Kohl integrated scientific evidence that pinpoints the evolved neurophysiological mechanism that links olfactory/pheromonal input to genes in hormone-secreting cells of tissue in a specific area of the brain that is primarily involved in the sensory integration of olfactory and visual input, and in the development of human sexual preferences. His award-winning 2007 article/book chapter on multisensory integration: The Mind’s Eyes: Human pheromones, neuroscience, and male sexual preferences followed an award winning 2001 publication: Human pheromones: integrating neuroendocrinology and ethology, which was coauthored by disinguished researchers from Vienna. Rarely do researchers win awards in multiple disciplines, but Kohl’s 2001 award was for neuroscience, and his 2007 “Reiss Theory” award was for social science. Kohl has worked as a medical laboratory scientist since 1974, and he has devoted more than twenty-five years to researching the relationship between the sense of smell and the development of human sexual preferences. Unlike many researchers who work with non-human subjects, medical laboratory scientists use the latest technology from many scientific disciplines to perform a variety of specialized diagnostic medical testing on people. James V. Kohl is certified with: * American Society for Clinical Pathology * American Medical Technologists James V. Kohl is a member of: * Society for Neuroscience * Society for Behavioral Neuroendocrinology * Association for Chemoreception Sciences * Society for the Scientific Study of Sexuality * International Society for Human Ethology * American Society for Clinical Laboratory Science * Mensa, the international high IQ society