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Full-Text Articles in Life Sciences

Substrate-Borne Communication In Chameleons: Do Vibrations Induce Behavioral Changes?, Emily J. Hamilton Sep 2017

Substrate-Borne Communication In Chameleons: Do Vibrations Induce Behavioral Changes?, Emily J. Hamilton

Mahurin Honors College Capstone Experience/Thesis Projects

Understanding the modes of communication used by a species is essential to understanding their ecology, behavior, and evolution. Substrate-borne vibrations have been reported to be produced by the veiled chameleon (Chamaeleo calyptratus), possibly implemented by use of a gular pouch. We found that veiled chameleons produced vibrations under dominance and mating behavioral contexts. We tested the sensitivity of veiled chameleons to vibrations by placing chameleons, one at a time, on a wooden dowel attached to a permanent magnetic shaker and recording each chameleon’s behavior before, during, and after a three-pulse vibrational stimulus of 25, 50, 150, 300, or 600 Hz. …


Social Context-Dependent Activity In Marmoset Frontal Cortex Populations During Natural Conversations, Samuel U. Nummela, Vladimir Jovanovic, Lisa De La Mothe, Cory T. Miller Jul 2017

Social Context-Dependent Activity In Marmoset Frontal Cortex Populations During Natural Conversations, Samuel U. Nummela, Vladimir Jovanovic, Lisa De La Mothe, Cory T. Miller

Psychology Faculty Research

Communication is an inherently interactive process that weaves together the fabric of both human and nonhuman primate societies. To investigate the properties of the primate brain during active social signaling, we recorded the responses of frontal cortex neurons as freely moving marmosets engaged in conversational exchanges with a visually occluded virtual marmoset. We found that small changes in firing rate (∼1 Hz) occurred across a broadly distributed population of frontal cortex neurons when marmosets heard a conspecific vocalization, and that these changes corresponded to subjects' likelihood of producing or withholding a vocal reply. Although the contributions of individual neurons were …


Interspecies Communication In Homo Sapiens And Canis Lupis Familiaris: A Meta Analysis, Karissa Panzino May 2017

Interspecies Communication In Homo Sapiens And Canis Lupis Familiaris: A Meta Analysis, Karissa Panzino

Honors College

Interspecies communication is a fundamental aspect of many creatures. Knowing what another animal is saying could not only prove interesting, it could quite literally save a life. For humans, human-canine communication is arguably the most prevalent form of interspecies communication, and is important not only because of the close proximity of humans to dogs, but also because of the co-evolutionary aspects that have driven humans closer to “man’s best friend”. While there are some sources that allow for a consistent analysis of results in this field, it is still developing and constantly changing. A meta-analysis was performed to identify sources …


Thinking Chickens: A Review Of Cognition, Emotion, And Behavior In The Domestic Chicken, Lori Marino Mar 2017

Thinking Chickens: A Review Of Cognition, Emotion, And Behavior In The Domestic Chicken, Lori Marino

Intelligence Collection

Domestic chickens are members of an order, Aves, which has been the focus of a revolution in our understanding of neuroanatomical, cognitive, and social complexity. At least some birds are now known to be on par with many mammals in terms of their level of intelligence, emotional sophistication, and social interaction. Yet, views of chickens have largely remained unrevised by this new evidence. In this paper, I examine the peer-reviewed scientific data on the leading edge of cognition, emotions, personality, and sociality in chickens, exploring such areas as self-awareness, cognitive bias, social learning and self-control, and comparing their abilities in …