{"id":311,"date":"2013-08-24T19:14:17","date_gmt":"2013-08-24T19:14:17","guid":{"rendered":"http:\/\/new.woodape.org\/index.php\/2013\/08\/24\/lenhardtcommentary\/"},"modified":"2013-08-24T19:14:17","modified_gmt":"2013-08-24T19:14:17","slug":"lenhardtcommentary","status":"publish","type":"post","link":"https:\/\/www.woodape.org\/index.php\/lenhardtcommentary\/","title":{"rendered":"Commentary: Regarding the Wood Ape and Vocalization"},"content":{"rendered":"<div class=\"writeboardbody\">\u00a0<\/div>\n<p>[A couple of months after the publication of <a href=\"http:\/\/woodape.org\/index.php\/about-bigfoot\/articles\/229-camera-test\">Testing of Game Cameras for Sound Emissions<\/a> at the <span class=\"caps\">NAWAC<\/span>  web site, Dr. Martin Lenhardt, who supervised the game camera tests,  contacted us again. After he noted, \u201cJane Goodall thinks there may be  something to this story,\u201d Dr. Lenhardt asked if we had \u201caccess to any  sounds this guy makes?\u201d The following reflections were offered in  response to receiving recordings of possible North American wood ape  vocalizations.]<\/p>\n<p>  <!--more-->  <\/p>\n<p><b>Introduction<\/b><\/p>\n<p>Who crossed the Bering Strait Land Bridge? This seems like a simple  enough question to pose. One obvious answer is humans (<i>Homo sapiens sapiens<\/i>). In the case of  North American apes, the answer is either one or more species of Asian  apes or the mythology of their interactions with humans. While North  American apes are certainly real in our culture, it has yet to be  established that they are a real part of the environment. Scientists  have established that ape migrations definitely took place, much along  the lines of one or more human migrations out of Africa, so taking the  same route as humans into North America is certainly possible.<\/p>\n<p>Unfortunately, the deficiency of details concerning this ape  migration hypothesis is compounded by a dearth of physical evidence.  However, we do know that the little hominids of Indonesia, <i>Homo  floresiensis<\/i>, not identified by science until recently, were well known  to the island\u2019s native people through their oral traditions. Whether or  not these \u201chobbits\u201d still exist, as some researchers hold out as a  possibility, has yet to be determined. According to local legends,  apelike creatures may still be hiding in the thick tropical forests of  Indonesian islands. An aversion to humans (possibly because they are  natural predators) seems to be one trait shared by all apes, including,  with little doubt, the North American wood ape. However, elusive  behaviors are likely to become less and less successful in this day of  high technology.<\/p>\n<p>Despite the absence of anatomical evidence that an undocumented  species of ape shares our North American environment, a plethora of  sightings exist from across the wilderness areas of the continent.  Questions regarding the accuracy of such reports are issues for  skeptics. Nonetheless, it appears that these creatures can be  characterized as being on the size scale above chimpanzees (<i>Pan  troglodytes<\/i>) and gorillas (<i>Gorilla gorilla<\/i>), exhibiting sexual  dimorphism (larger males), and likely exhibiting similar apish  behaviors. Based on what is known about African apes, what can be  hypothesized about North American apes?<\/p>\n<p><b>Neurology<\/b><\/p>\n<p>The skulls of gorillas hold a brain of about 500,000 milligrams;  chimpanzees have smaller skulls and smaller brains (405,000 mg).  These values, when contrasted to human values (1,330,000 mg), should  produce an awareness of a very different primate than us (Stephen,  Frahm, &#038; Baron, 1981). Since brain size varies with body size, a  comparative index, the Encephalization Quotient (EQ), was developed as a  way of understanding intelligence and the ability to address complex  cognitive tasks. Gorillas have an EQ range of 1.53 to 1.76. Chimpanzees  have an EQ range of 2.3 to 2.5 and humans vary from 7.39 to 7.79  (Jerison, 1973). Much of our brain function is devoted to language,  symbol processing, imagination, and planning. Taking the wood ape as an  example, much of its smaller brain (guessing an EQ of about 1.7) might  be devoted to sensorimotor processing, the first stage of cognitive  development, and not symbolic cognition. Wood apes are primates, they  have survived in this world, but doubtlessly not by the same neural  strategies employed by humans. We probably share more with the dog,  which evolved with us, than with these animals. When you ask your dog to  speak, he barks; if you ask that of a wood ape, it will likely throw a  rock at you.<\/p>\n<p><b>Communication<\/b><\/p>\n<p>The level of communication learned and exhibited by great apes is not  comparable to the capabilities of humans. Chimpanzees have a limited  vocal repertoire and do not have the ability to generate the range of  human speech sounds. Part of this vocal limitation is due to their  peripheral anatomy, and part is due to their neurology. When compared to  chimpanzees, humans have a larynx positioned much lower in the throat  (vocal tract). This placement allows for more articulated movements  which results in more sounds. Apes have a tongue located high in the  throat along with a low palate, restricting potential speech sounds.<\/p>\n<p>As important as peripheral anatomy is, neurological control of vocal  tracts is critical. Primates in the ape line of descent do not have  cortical control of vocalizations. That is, they cannot choose when to  vocalize or when not to; their vocal tract is under the control of the  emotional part of the brain, the limbic system. Even chimpanzees are  sometimes incapable of controlling their vocalizations, despite sharing  more than 95 percent of our <span class=\"caps\">DNA<\/span>. It is well  known that some chimpanzees, even upon discovery of a food treat, cannot  inhibit their vocalizations, which often attracts the interest of  others. Some go to the extreme of covering their mouth with the hand to  muffle their self-generated sounds.<\/p>\n<p>A common sound exhibited by apes, and a sound recorded in the pursuit of wood apes by the North American Wood Ape Conservancy (<span class=\"caps\">NAWAC<\/span>),  is the grunt. The ape grunt can be a reflexive sound emitted while  producing an effortful behavior, or it can be an alarm call, or it can  relate to a social aspect of group behavior. The grunt recordings  provided from wood ape encounters seem to be the effort grunts often  associated with rock throwing. These grunts appear to be reflexive, but  there is no reason to believe they might not be communicative under  other circumstances. That is to say, effort grunts might signal the  possibility of some form of communication in these animals.<\/p>\n<p>There is evidence that some great apes can whistle, and an  orangutan\u2014an Asian ape\u2014has appeared to acquire it spontaneously in the  Washington Zoo (Wich et al., 2009). The ability to whistle is part of  the lore pertaining to North American apes. Whistling does require some  control of the vocal tract, both breath flow and parsing of the lips.  Perhaps whistling is how our human species gained control of  self-emitted sounds. In humans, the whistled energy exists in a band  from about 1,000 to 3,000 Hz (our most sensitive range of airborne  hearing) and is intense (130 dB <span class=\"caps\">SPL<\/span>, as  measured at the lips). The Silbo, a whistled form of a Spanish dialect,  is a language of the Canary Islands that can be heard over a great  distance (Rialland, 2006). This kind of ability would provide a clear  advantage to North American apes. What a potentially great shared skill!<\/p>\n<p><b>Interaction<\/b><\/p>\n<p>Meaningful Interactions with wood apes may not be possible. Humans  have a tendency to assume that other creatures think like we do  (anthropomorphism), or that at least they try, like the movie alien ET.  Humans do this with other humans; it is called Theory of Mind (ToM)  (Premack &#038; Woodruff, 1978). When a ToM does not develop normally in  humans, as with some neurological diseases, glaring social deficits can  result (Korkmaz, 2011). We humans do not think exactly the same, but the  insight that minds have much in common has fostered a human social  culture. There is no reason to believe that wood apes share even a  minimal culture comparable to humans, and we should be on guard in the  event of interactions. It may be hard to resist the idea that a creature  that looks so much like us must share our way of perceiving the world,  but it does not. Yes, it may also share much of our <span class=\"caps\">DNA<\/span>, but the wood ape is a very distant cousin, at best. The \u201cDon\u2019t feed the bears\u201d sign in Yellowstone applies.<\/p>\n<p><b>Conservation<\/b><\/p>\n<p>With the eventual collection of evidence identifying this species,  what would be next? These apes will likely fall under federal  protection, and rightly so. They are living forms of a shared common  ancestor. With federal protection, conservation efforts will follow,  just as the <span class=\"caps\">NAWAC<\/span> has already established as a priority. Well done.<\/p>\n<p><b>\u201cMyth\u201d<\/b><\/p>\n<p>What if only the myth of the Asian Apes was brought to our land  across the Bering Strait Land Bridge? Myths are not falsehoods; they are  beliefs to live by. For the Yokuts in California, for example, the  North American ape is part of their creation story. Their ape, called  Hairy Man, helped create humans from the soil, making them bipedal, much  in keeping with the creation account in Genesis from the Hebrew Bible,  but upon seeing him the people were afraid and ran away. Much the same  behavior prevails today. The Yokut taught their children about the  dangers of their environment by warning them that Hairy Man is out there  in the dark and by the rivers. The children were warned not to go out  if they heard whistling, a sound made by Hairy Man. Children need to  learn roles in their society for their benefit and that of the group,  and in this sense, Hairy Man is their teacher (Moskowitz-Strain, 2003, 2012).<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"516\" border=\"1\" style=\"caption\" class=\"caption\" sasquatch=\"sasquatch\" alt=\"This mask is designated as a chief sasquatch mask at the First Peoples Gallery of the Royal B.C. Museum in Victoria, BC. (Generic url is http:\/\/royalbcmuseum.bc.ca )\" src=\"http:\/\/woodape.org\/images\/stories\/Articles\/sasquatch1.jpg\" \/><\/p>\n<p><b>Conclusion<\/b><\/p>\n<p>Myths provide beliefs and moral stories to live by, and just as the  Yokut believe that their Hairy Man was real, so do some of us in the  scientific community. If the Yokut are correct, Asian apes migrated here  before the first Native Americans. As Jane Goodall might say, it is  possible that apes live with us in North America. I want to think they  do.<\/p>\n<p>References<\/p>\n<p>Jerison, H. J. (1973). <i>Evolution of the brain and intelligence<\/i>. New  York, NY: Academic Press. Also see  www.primateportal.org\/normative-values\/body-weight-vs-brain-weight-0<\/p>\n<p>Korkmaz, B. (2011). Theory of mind and neurodevelopmental disorders of childhood. <i>Pediatr. Res. 69<\/i> (5 Pt 2): 101R\u20138R.<\/p>\n<p>Moskowitz-Strain, K. (2003, 2012). <i>Mayak Datat<\/i>. Retrieved from<br \/> http:\/\/www.isu.edu\/rhi\/pdf\/Mayak%20Datat%20Hairy%20Man%20Pictographs-1.pdf<br \/> http:\/\/www.bigfootproject.org\/articles\/mayak_datat.html<\/p>\n<p>Premack, D. G., &#038; Woodruff, G. (1978). Does the chimpanzee have a  theory of mind? <i>Behavioral and Brain Sciences 1<\/i>(4): 515\u2013526.<\/p>\n<p>Rialland, A. (2005). Phonological and phonetic aspects of whistled languages. <i>Phonology 22<\/i>(2), pp. 237\u2013271.<\/p>\n<p>Stephen, H; Frahm, H; and Baron, G. (1981). New and revised data on  volumes of brain structures in insectivores and primates. <i>Folia  Primatol. 35<\/i>, 1-39.<\/p>\n<p>Wich, S. A., Swartz, K. B., Hardus, M. E., Lameira, A. R., Stromberg,  E., &#038; Shumaker, R. W. (2009). A case of spontaneous acquisition of a  human sound by an orangutan.<i> Primates, 50<\/i>(1):56-64.<\/p>\n<p> ***<\/p>\n<p> Martin L. Lenhardt, Au.D., Ph.D.<br \/> Professor of Biomedical Engineering<br \/> Virginia Commonwealth University<br \/> P.O. Box 0168<br \/> Richmond VA 23298-0168<\/p>\n<p>Biographic Sketch<\/p>\n<p>Martin Lenhardt holds a B.S. in Biology, an M.A. in Audiology-Speech  Pathology from Seton Hall University in N.J., an Au.D. From Kirksville  College of Osteopathic Medicine, and a Ph.D. in Psychoacoustics\/Speech  Science from Florida State University. He was a postdoctoral fellow in  Otolaryngology and Biomedical Engineering at John Hopkins University.  Dr. Lenhardt is presently Professor of Biomedical Engineering at Medical  College of Virginia, at Virginia Commonwealth University in Richmond.  He also teaches in the distance learning Au.D. program at A.T. Still  University in Mesa, AZ, where he was awarded the President\u2019s Technology  Award for 2001 and a Teaching Award for 2003.<\/p>\n<p>Dr. Lenhardt is both a principal and director in two biotech  companies at VCU\u2019s Research Park. His companies have been awarded SBIRs  from the <span class=\"caps\">NIH<\/span> and Homeland Security. He secured <span class=\"caps\">FDA<\/span> approval for a tinnitus device and supervises <span class=\"caps\">FDA<\/span> \u201cgood manufacturing practices\u201d in its production and clinical distribution. He co-authored, with the late Dan Johnson, the <span class=\"caps\">OSHA<\/span> ultrasonic hearing standards, has authored 100+ publications, and he holds ten US and foreign patents.<\/p>\n<p>Dr. Lenhardt is a licensed audiologist and speech language pathologist in the Commonwealth of Virginia and holds <span class=\"caps\">ASHA<\/span>  certification in both fields. His research interests are biomedical  acoustics, speech perception, language origins, tinnitus, and  habilitative science. He was an Executive Fellow in Patient Safety in  Hospital Administration at <span class=\"caps\">VCU<\/span> (2004) and he  holds a certificate in Health Care Compliance (Pharmaceutical,  Biologics, Medical Devices) from Seton Hall University Law School  (2006).<\/p>\n<p>Marty and his wife Anita have fourteen children and reside on the York River in Gloucester, Virginia.<\/p>\n<p>This article was originally published 24 August 2013.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 [A couple of months after the publication of Testing of Game Cameras for Sound Emissions at the NAWAC web site, Dr. Martin Lenhardt, who supervised the game camera tests, contacted us again. After he noted, \u201cJane Goodall thinks there may be something to this story,\u201d Dr. Lenhardt asked if we had \u201caccess to any [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","inline_featured_image":false,"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[26],"tags":[],"class_list":["post-311","post","type-post","status-publish","format-standard","hentry","category-articles"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Commentary: Regarding the Wood Ape and Vocalization - North American Wood Ape Conservancy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.woodape.org\/index.php\/lenhardtcommentary\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Commentary: Regarding the Wood Ape and Vocalization - North American Wood Ape Conservancy\" \/>\n<meta property=\"og:description\" content=\"\u00a0 [A couple of months after the publication of Testing of Game Cameras for Sound Emissions at the NAWAC web site, Dr. Martin Lenhardt, who supervised the game camera tests, contacted us again. 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