Digital Commons Network^™

Ptsd From Childhood Trauma As A Precursor To Attachment Issues, Christy Owen

Fidei et Veritatis: The Liberty University Journal of Graduate Research

The past 20 years have been turbulent regarding Reactive Attachment Disorder (RAD), with conflicting research about its causes, effects, treatment, and prognosis. The current diagnostic criteria in the DSM-5 fails to adequately address this disorder. A number of deviant and maladaptive behaviors common amongst children with RAD are not even mentioned in the diagnostic criteria. As such, the diagnostic definition is almost unidentifiable or incompatible with real-life conduct manifestations of the disorder. Rather, this author contends that RAD is foundationally a unique and extreme form of Posttraumatic Stress Disorder (PTSD) from Early Childhood Trauma. The child endured unspeakable neglect and/or …

From Norway With Love: A Study Of Oxytocin, Social Bonding, And Life-History Trade-Offs, Nicholas Grebe

Psychology ETDs

Oxytocin (OT) is a mammalian neuropeptide hormone that has been extensively studied in the field of obstetrics and mother-infant bonding. More recently, animal and human studies have suggested that OT might also have important functions within sexual pair-bonds. While some have advanced the perspective that OT is a ‘bonding’, ‘cuddle’, or ‘trust’ hormone, a number of opposing findings cast doubt on such interpretations. Several research groups have attempted to address this so-called ‘paradox’. I propose a different type of framework that attempts to address this paradox, but perhaps more importantly, also aims to provide additional explanatory power regarding the functions …

How Could Consciousness Emerge From Adaptive Functioning?, Max Velmans

Animal Sentience

The sudden appearance of consciousness that Reber posits in creatures with flexible cell walls and motility rather than non-flexible cells walls and no motility involves an evolutionary discontinuity. This kind of “miracle” is required by all “discontinuity” theories of consciousness. To avoid miraculous emergence, one may need to consider continuity theories, which accept that different forms of consciousness and material functioning co-evolve but assume the existence of consciousness to be primal in the way that matter and energy are assumed to be primal in physics.

“Cellular Basis Of Consciousness”: Not Just Radical But Wrong, Brian Key

Animal Sentience

Reber (2016) attempts to resuscitate an obscure and outdated hypothesis referred to as the “cellular basis of consciousness” that was originally formulated by the author nearly twenty years ago. This hypothesis proposes that any organism with flexible cell walls, a sensitivity to its surrounds, and the capacity for locomotion will possess the biological foundations of mind and consciousness. Reber seeks to reduce consciousness to a fundamental property inherent to individual cells rather than to centralised nervous systems. This commentary shows how this hypothesis is based on supposition, false premises and a misunderstanding of evolutionary theory. The cellular basis of consciousness …

The Person And The Self As Social Accomplishment, Leslie Irvine

Animal Sentience

Rowlands (2016) presents a compelling argument for extending personhood to nonhuman animals. Sociological conceptions of the person also do not require that animals meet the elusive standard of self-awareness. Sociological ideas on selfhood support the claims about pre-reflective awareness and extend the requisite experiences to animals.

The Evolutionary History Of Consciousness, Eirik Søvik, Clint Perry

Animal Sentience

Klein & Barron argue that insects are capable of subjective experience, i.e., sentience. Whereas we mostly agree with the conclusion of their arguments, we think there is an even more important message to be learned from their work. The line of reasoning opened by Klein & Barron proves instructive for how neuroscientists can and should explore the biological phenomenon of consciousness.

Beginnings: Physics, Sentience And Luca, Carolyn A. Ristau

Animal Sentience

According to Reber’s model, Cellular Basis of Consciousness (CBC), sentience had its origins in a unicellular organism and is an inherent property of living, mobile organic forms. He argues by analogy to basic physical forces which he considers to be inherent properties of matter; I suggest that they are instead the stuff of scientific investigation in physics. I find no convincing argument that sentience had to begin in endogenously mobile cells, a criterial attribute of the originator cell(s)for sentience according to CBC. Non-endogenously mobile cells, (i.e., plants or precursors) in a moving environment would suffice. Despite my concerns and the …

Might Insects Experience Pain?, Robert W. Elwood

Animal Sentience

The aim of this commentary is to expand the discussion about subjective experience to other arthropods, notably crustaceans. Various species of crustaceans show responses consistent with their feeling pain. Hermit crabs also show prolonged investigation of new shells. They clearly attend to and integrate information from a wide variety of sources that enable them to evaluate the quality of the new shell relative to their current shell. These observations too are consistent with their having subjective experience.

Prospective And Dyadic Associations Between Expectant Parents’ Prenatal Hormone Changes And Postpartum Parenting Outcomes, Robin S. Edelstein, William J. Chopik, Darby E. Saxbe, Britney M. Wardecker, Amy C. Moors, Onawa P. Labelle

Psychology Faculty Articles and Research

During the transition to parenthood, both men and women experience hormone changes that are thought to promote parental care. Yet very few studies have explicitly tested the hypothesis that prenatal hormone changes are associated with postpartum parenting behavior. In a longitudinal study of 27 first-time expectant couples, we assessed whether prenatal hormone changes predicted self and partner-reported parenting outcomes at three months postpartum. Expectant fathers showed prenatal declines in testosterone and estradiol, and larger declines in these hormones predicted larger contributions to household and infant care tasks postpartum. Women whose partners showed larger testosterone declines also reported receiving more support …

Joint Action And Action-Effect Association In A Movement Control Task, Jiuyang Bai

Theses and Dissertations

Interpersonal action coordination relies on an information channel between co-actors. Previous studies have shown that offline or online visual, auditory, and haptic information can facilitate joint action. However, most previous studies only investigated the information that is naturally meaningful in the task context. Few explanations have been given about the underlying mechanism of this facilitation effect. The current study was designed to investigate what makes the information useful in improving joint action performance. I argued that externally added information (action effects) can also facilitate joint action. According to the Theory of Event Coding (TEC), once the association between an action …

Phenomenal Consciousness In Insects? A Possible Way Forward, Brian Key

Animal Sentience

Klein & Barron (2016) propose that subjective experience in humans arises in the midbrain and then argue that insects have the capacity for subjective experience because their nervous system can perform neural processing similar to that of the midbrain. This approach ultimately fails because it is built on the false premise that the midbrain is the source of the awareness of sensory stimuli. I instead propose that the capacity for subjective experience must be based on fundamental neural computations that generate the “what it feels like” experience. Two such computations associated with metarepresentations and high level representations entering working memory …

The Bilingual Brain, Victoria A. James

Journal of Counseling and Psychology

This literature review explores the neurocognitive effects of the bilingual brain. Many areas of bilingualism are examined such as age of acquisition, which is when the second language is attained, and memory. The three types of bilingual memory are implicit memory, which is procedural memory, explicit memory, which is declarative memory, and episodic memory, which is autobiographical memory. In relation to the bilingual brain, cognition, control, and /lateralization are also reviewed. Finally, second language (L2) learning strategies are considered. The objective of this study is to obtain an understanding on how two or more languages are acquired and processed in …

An Evaluation Of A Shelter Dog Training Class: Outcomes For Volunteer Trainers And For Dogs, Paula M. Ramirez

Animal Training and Obedience Collection

No abstract provided.

A Quantitative Comparison Of The Hemispheric, Areal, And Laminar Origins Of Sensory And Motor Cortical Projections To The Superior Colliculus Of The Cat., Blake E Butler, Nicole Chabot, Stephen G Lomber

Brain and Mind Institute Researchers' Publications

The superior colliculus (SC) is a midbrain structure central to orienting behaviors. The organization of descending projections from sensory cortices to the SC has garnered much attention; however, rarely have projections from multiple modalities been quantified and contrasted, allowing for meaningful conclusions within a single species. Here, we examine corticotectal projections from visual, auditory, somatosensory, motor, and limbic cortices via retrograde pathway tracers injected throughout the superficial and deep layers of the cat SC. As anticipated, the majority of cortical inputs to the SC originate in the visual cortex. In fact, each field implicated in visual orienting behavior makes a …

Effects Of Stress, Sex Differences, And Cognitive Reserve On Cognitive Decline In Healthy Elderly Subjects, Courtney Ray

Loma Linda University Electronic Theses, Dissertations & Projects

Extensive research has been conducted linking stress to increased allostatic load and degradation of various organs over time. In the brain, the hippocampus appears to be particularly vulnerable. This deterioration is manifest clinically by impaired performance on tasks of declarative memory. The Social Readjustment Ratings Scale (SRRS) is an inventory of high intensity psychosocial stressors. This instrument has previously been used to help calculate risk of disease. Using measurements of stressful life events, it may be possible to similarly predict risk of cognitive impairment. To test this, the current study explored the cumulative effect of discreet psychosocial stressors that have …

Task- And Treatment Length–Dependent Effects Of Vortioxetine On Scopolamine-Induced Cognitive Dysfunction And Hippocampal Extracellular Acetylcholine In Rats, Alan Pehrson, Todd M. Hillhouse, Nasser Haddjeri, Renaud Rovera, Joseph H. Porter, Arne Mørk, Gennady Smagin, Dekun Song, David Budac, Manuel Cajina, Connie Sanchez

Department of Psychology Faculty Scholarship and Creative Works

Major depressive disorder (MDD) is a common psychiatric disorder that often features impairments in cognitive function, and these cognitive symptoms can be important determinants of functional ability. Vortioxetine is a multimodal antidepressant that may improve some aspects of cognitive function in patients with MDD, including attention, processing speed, executive function, and memory. However, the cause of these effects is unclear, and there are several competing theories on the underlying mechanism, notably including regionally-selective downstream enhancement of glutamate neurotransmission and increased acetylcholine (ACh) neurotransmission. The current work sought to evaluate the ACh hypothesis by examining vortioxetine's ability to reverse scopolamine-induced impairments …

Antipsychotic Drugs On Maternal Behavior In Rats, Ming Li

Department of Psychology: Faculty Publications

Rat maternal behavior is a complex social behavior. Many clinically used antipsychotic drugs, including the typical drug haloperidol and atypical drugs clozapine, risperidone, olanzapine, quetiapine, aripiprazole and amisulpride, all disrupt active maternal responses (e.g. pup retrieval, pup licking and nest building) to various extents. In this review, I present a summary of recent studies on the behavioral effects and neurobiological mechanisms of antipsychotic action on maternal behavior in rats. I argue that antipsychotic drugs at the clinical relevant doses disrupt active maternal responses primarily by suppressing maternal motivation. Atypical drug-induced sedation also contributes to their disruptive effects, especially that on …

Enhancing Scientific Comprehension Through Content Acquisition Podcasts, Caroline Elizabeth Williams

Theses and Dissertations

This study sought to determine the effectiveness of using Content Acquisition Podcasts (CAPs) to teach children with learning disabilities scientific vocabulary. CAPs are multimedia instructional podcasts that combine images and sound to teach supplemental vocabulary. Four children ages 9 to 10 with learning disabilities were taught vocabulary words to prepare them for end-of-year testing. Words were taken from units about rocks, soil and fossils. This study used a multiple probe multiple baseline across units design. Data analysis showed that three of four participants experienced significant improvement in at least one of three units. Social validity questionnaires showed that all four …

Interleukin-6, Depression, And Religious Coping In Older Seventh-Day Adventists, Palak Dipak Kothari

Loma Linda University Electronic Theses, Dissertations & Projects

Prior research suggests that depression and chronic inflammation have a bidirectional relationship. This study examined how depressive symptoms and the inflammatory marker, interleukin-6 (IL-6), interact over time in 287 older adults (54% female, 63% White, Mage = 66, SDage = 10.9) from the Biopsychosocial Religion and Health Study and whether religious coping moderated this relationship. Depressive symptoms and IL-6 were assessed in 2006-7 and 2010-11. Results of the hierarchical multiple regressions indicate that initial depressive symptoms predicted IL-6 three to five years later, and that this relationship was moderated by positive religious coping. Moreover, negative religious coping predicted depressive symptoms …

Survive Or Thrive: Focusing On The Forest (Global) Or The Trees (Local) Impacts Meaning Making, Seda Terzyan

Loma Linda University Electronic Theses, Dissertations & Projects

Focusing on the forest versus the trees illustrates a fundamental difference in how people see the world and make meaning, termed global and local attention. How we shift between them may impact whether we experience happiness or anxiety. We explored how different emotions serve as triggers for shifting between global and local attention using film clips and measuring responses to computerized attention tasks. We found that negative film clips localized attention, while positive films globalized attention, concluding that emotions can impact whether we attend to the forest or the trees. However, different induction strategies and various studies have led to …

Chronic Oral Capsaicin Exposure During Development Leads To Adult Rats With Reduced Taste Bud Volumes, Jacquelyn M. Omelian, Kaeli K. Samson, Suzanne I. Sollars

Psychology Faculty Publications

Introduction

A cross-sensory interaction between gustatory and trigeminal nerves occurs in the anterior tongue. Surgical manipulations have demonstrated that the strength of this relationship varies across development. Capsaicin is a neurotoxin that affects fibers of the somatosensory lingual nerve surrounding taste buds, but not fibers of the gustatory chorda tympani nerve which synapse with taste receptor cells. Since capsaicin is commonly consumed by many species, including humans, the experimental use of this neurotoxin provides a naturalistic perturbation of the lingual trigeminal system. Neonatal or adult rats consumed oral capsaicin for 40 days, and we examined the cross-sensory effect on the …

Sex Similarities Versus Gender Symmetry, Jose C. Yong, Norman P. Li

Research Collection School of Social Sciences

Men and women have similar and different mate preferences, which include preferences for type of relationship duration as well as the types of traits that are sought out within each mating duration. This entry covers some of the key similarities and differences in preferences for both mating context and partner traits within context.

Neuropsychological Effects Of Pomegranate Supplementation Following Ischemic Stroke, John A. Bellone

Loma Linda University Electronic Theses, Dissertations & Projects

Polyphenols are compounds found in fruits and vegetables that have antioxidant and anti-inflammatory properties. Mounting evidence suggests that dietary polyphenol intake can reduce the detrimental effects of various disease processes, and pomegranates have frequently been examined because of their particularly high polyphenol content. Since stroke induces both oxidative stress and inflammation and is currently the leading cause of long-term disability in the U.S., we sought to determine whether dietary supplementation with polyphenols could enhance cognitive recovery in individuals who had suffered an ischemic stroke. We administered polyphenols via 2 POMx pills containing polyphenols derived from pomegranates equivalent to the content …

Hypertension In Older African Americans: Testing Psychosocial Mediators, Taylor L. Draper

Loma Linda University Electronic Theses, Dissertations & Projects

Past research has shown that low socioeconomic status (SES) and experiencing racial discrimination are both related to hypertension in African Americans. Further, low SES and racial discrimination have been found to affect hypertension indirectly through stress, low levels of psychosocial resources, and lifestyle risk factors in African American adults. Past studies have used the Reserve Capacity Model (RCM; Gallo & Matthews, 2003; 2005) to understand these relationships. The RCM asserts that stress can be mitigated by psychosocial resources (mastery, optimism, self-esteem) which lead to healthy lifestyle behaviors predictive of cardiac health. However, there are few studies that use the RCM …

From Thinking Selves To Social Selves, Judith Benz-Schwarzburg

Animal Sentience

I argue that Rowlands’s concept of pre-reflective self-awareness offers a way to understand animals as Social Selves. It does so because it departs from the orthodox conception of self-awareness, which is both egocentric and logocentric. Instead, its focus is on the relation between consciousness and a person’s lived body, her actions and goals. Characterizing persons as pre-reflectively self-aware beings in Rowlands’s sense offers a much more useful conceptual tool to interpret social behaviour in animals.

What Do We Owe Animals As Persons?, Judith Benz-Schwarzburg

Animal Sentience

Rowlands (2016) concentrates strictly on the metaphysical concept of person, but his notion of animal personhood bears a moral dimension (Monsó, 2016). His definition of pre-reflective self-awareness has a focus on sentience and on the lived body of a person as well as on her implicit awareness of her own goals. Interestingly, these also play a key role in animal welfare science, as well as in animal rights theories that value the interests of animals. Thus, Rowlands’s concept shows connectivity with both major fields of animal ethics. His metaphysical arguments might indeed contain a strong answer to the question of …

If Insects Have Phenomenal Consciousness, Could They Suffer?, Elizabeth S. Paul, Michael T. Mendl

Animal Sentience

Klein & Barron’s (K & B’s) suggestion that insects have the capacity for phenomenal consciousness is a refreshing and challenging departure from the cautious and agnostic stance that is taken by many researchers when considering this possibility. It is impossible to falsify the sceptic’s view that neural and behavioural parallels between humans and insects need not imply either similar conscious experience or even any phenomenal consciousness in insects at all. But if K & B are right, it is important to consider the possible contents of insect consciousness. Here we discuss whether affective consciousness, with its implications for potential suffering, …

Subjective Experience In Insects: Definitions And Other Difficulties, Shelley Adamo

Animal Sentience

Whether insects have the potential for subjective experiences depends on the definition of subjective experience. The definition used by Klein & Barron (2016) is an unusually liberal one and could be used to argue that some modern robots have subjective experiences. From an evolutionary perspective, the additional neurons needed to produce subjective experiences will be proportionately more expensive for insects than for mammals because of the small size of the insect brain. This greater cost could weaken selection for such traits. Minimally, it may be premature to assume that small neuronal number is unimportant in determining the capacity for consciousness.

Bacteria And The Cellular Basis Of Consciousness, Michael L. Woodruff

Animal Sentience

According to Reber’s theory, the Cellular Basis of Consciousness (CBC), sentience originates as bio-sensitivity in unicellular organisms. For this reason, Reber regards sentience as evolutionarily foundational. Many bacteria show chemotaxis and, thus, according to CBC, they are sentient. Analysis of the genetic mechanisms underlying bacterial chemotaxis indicates that sentience has no explanatory power in this case. Genetic analysis also fails to show species continuity underlying bio-sensitivity in bacteria and bio-sensitivity in species with nervous systems, so it does not seem that sentience is evolutionary foundational. CBC is rejected on these grounds.

Unity Of Consciousness In Animals, Bernard E. Rollin

Animal Sentience

Both Descartes the rationalist and Hume the empiricist, polar opposites philosophically, denied the unity and continuity of animal mind. Kant pointed out that the presence of retrievable memories entails unity of consciousness. Rowlands now argues that animals too have unity of consciousness.