Browse Items (108 total)

The distribution of peak vertical forces between the forelimbs and the hind limbs is one of the key traits distinguishing primate quadrupedal locomotion from that of other mammals. Whereas most mammals generate greater peak vertical forelimb forces,…

Using their biological sonar, bats estimate distance to avoid obstacles and capture moving prey. The primary distance cue is the delay between the bat's emitted echolocation pulse and the return of an echo. The mustached bat's auditory midbrain…

In this essay we link the rationale for the medical humanities with radical hermeneutics, a move that infuses the medical humanities with incredulity and suspicion. This orientation is particularly important at this historical moment, when the…

Three distinct phenomena are currently at play in medical education: (1) the pervasive use of PowerPoint in teaching, (2) the wholesale application of competency models, and (3) the shift from paper reading to screen reading regardless of course,…

Observers and critics of the medical profession, both within and without, urge that more attention be paid to the moral sensibilities, the characters, of medical students. Passing on particular moral values and actions to physicians has always been…

Sperry's proposal that subjective experience plays a major role in brain function and in the emergence of mind, consciousness and human values represent a challenge to behaviorism as the dominant force in psychology. Mind is viewed as an emergent…

We examined masseter and temporalis recruitment and firing patterns during chewing in five male Belanger's treeshrews (Tupaia belangeri), using electromyography (EMG). During chewing, the working-side masseters tend to show almost three times more…

Traditionally, drug design programs are focused on optimizing the specificity of lead compounds against a carefully selected drug target. Disappointingly, this approach to discover a "magic bullet" drug has not met with the expected success for CNS…

This article is part of a study on cortical microcircuitry in which flash evoked potentials (FEPs) were recorded from the anesthetized rat visual cortex. The FEPs were subjected to current source density analysis (CSD). One of the limitations of the…

There are 3 known forms of synaptic plasticity at CNS synapses: long-term potentiation (LTP) mediated by NMDA receptor activation, LTP mediated by voltage-dependent calcium channel (VDCC) activation, and long-term depression (LTD) mediated by the…

Brain slices have been responsible for the majority of advances in our understanding of the cellular aspects of altered synaptic strength underlying memory, long-term potentiation (LTP) and long-term depression (LTD), and increases and decreases,…

Structural characteristics of normally calcifying leg tendons of the domestic turkey Meleagris gallopavo have been observed for the first time by tapping mode atomic force microscopy (TMAFM), and phase as well as corresponding topographic images were…

Cardiac remodeling is accelerated during pathological conditions and several anabolic and catabolic regulators work in concert to repair the myocardium and maintain its functionality. The fibroblasts play a major role in this process via collagen…

BACKGROUND: The parameters of self-tapping screw (STS) performance in normal and osteoporotic bone have been defined in representative environments, but the question remains as to the clinical application of such findings. The goal of this study was…

Recent evidence indicates that when 1-(3-trifluoromethylphenyl)piperazine (TFMPP) is used as a training drug in the drug discrimination paradigm it produces a stimulus effect that is site-selective at the 5-HT1B receptor. The present study sought to…

This book describes methods of career construction counseling based on the conceptual model of life designing. It defines counseling and how career counseling has evolved over the last century. The counseling profession has evolved three distinct…

New bone formation (e.g., periosteal reaction) is one component of bone and joint disease diagnosis. Its application in the archeologic record has been compromised by lack of standardization. An objective technique for validating observations seems…

A fluorinated detergent, CF(3)(CF(2))(5)C(2)H(4)-O-maltose, was reconstituted into a lipid bilayer model membrane system to demonstrate the feasibility of determining solvent accessibility and membrane immersion depth of each fluorinated group by…

Previous studies have shown that tachykinin peptide ligands of the tachykinin NK1 receptor exhibit functional selectivity with respect to signal activation and desensitization. The differences are most dramatic between the naturally occurring…

The field of evolutionary developmental biology is broadly focused on identifying the genetic and developmental mechanisms underlying morphological diversity. Connecting the genotype with the phenotype means that evo-devo research often considers a…

Positive inspiratory pressure- (PIP) ventilated, isolated rat lungs become edematous when perfused at rates approximately the normal cardiac output. The study was conducted to test the hypothesis that high peak inspiratory pressures contribute to the…

One of the fundamental questions of auditory research is how sounds are segregated because, in natural environments, multiple sounds tend to occur at the same time. Concurrent sounds, such as two talkers, physically add together and arrive at the ear…

The solvent drag reflection coefficient (sigma) for total proteins can be estimated by comparing the relative degrees of concentration of erythrocytes and plasma proteins that occur during fluid filtration in an isolated perfused organ. In this…
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