The American cockroach, Periplaneta americana, is reported to follow walls at a rate of up to 25 turns s(-1). During high-speed wall following, a cockroach holds its antenna relatively still at the base while the flagellum bends in response to upcoming protrusions. We present a simple mechanosensory model for the task-level dynamics of wall following. In the model a torsional, mass-damper syste...

Inspired by nature’s effective use of tactile feedback for rapid maneuvering, we have designed a passive, highly compliant tactile sensor for Sprawlette, a hexapedal running robot. To bridge the gap between between biology and design, we have taken initial steps toward understanding how the cockroach, Periplaneta americana, uses antenna feedback to control its orientation as it runs along a wal...

rupture of the free wall of the heart is one of the dangerous complications of myocardial infarction that usually results in death of the patient. only a few limited number of cases have been reported to have survived for a long period after myocardial infarction, free cardiac wall rupture and the following pseudo aneurysm. in this case report, a rare case of pseudo aneurysm following silent mi...

Animals are remarkably stable during high-speed maneuvers. As the speed of locomotion increases, neural bandwidth and processing delays can limit the ability to achieve and maintain stable control. Processing the information of sensory stimuli into a control signal within the sensor itself could enable rapid implementation of whole-body feedback control during high-speed locomotion. Here, we sh...

background: uterine synechiae or asherman's syndrome is a condition that can cause infertility. the present experimental study was designed to establish the rabbit as an animal model for human asherman's syndrome using the endometrial curettage. methods: in an experimental study, female adult rabbits (n=18) were randomly divided into intact and ovariectomized groups. one third of caudal part of...