Tag: "stimuli" at biology news
The mechanical switch in the ear
such as sound and movement are perceived by the specialized receptors of the inner ear. These mechanical receptors are called sensory hair cells because of a tuft of hairs or specialized processes present at the top of the cell. When sound or movemen...
Organization for Human Brain Mapping annual meeting abstract highlights
...may not invoke the true response to dynamic facial stimuli
as seen in the real world. Using dynamic fearful facial expressions, the present study indicates specific abnormalities in the amygdalarresponse to threatening faces in schizophrenic patients. Poster #1212 Cortical Thinning in Normal Aging To be pr...
Obese mice provide clues to a natural system that puts brakes on obesity
..." The next step for the researchers is to identify stimuli
that induce Foxa-2 in people. "We know that Foxa-... expressed in human adipocytes, and if we knew the stimuli
that are responsible for inducing Foxa-2 we could potentially induce Foxa-2 activity in people at ri...
JCI table of contents, July 15, 2003
...event the expansion of fat cell numbers. While the stimuli
that induce Foxa-2 expression in mature fat cells is unknown, the authors propose that the pathways involved may serve as a new target for pharmaceutical interventions of both obesity and diabetes. TITLE: The role of Foxa-2 in adipocyte metabolism an...
Fears of second-hand smoke confirmed
...may occur spontaneously or in response to specific stimuli
such as heat stress, radiation, steroids, and oxidative stress. A New Study Because oxidative stress and apoptosis are implicated in numerous processes, including aging, inflammation, and carcinogenesis, it is reasonable to hypothesize a link betwee...
Name that tune
... learning." How the brain perceives and interprets stimuli
from the external world are fundamental questions in neuroscience. There are many types of memory systems in the brain. Memories of words, sounds of voices or patterns of music are important components of human daily experience and are essential for ...
Researchers one step closer to Holy Grail of neurobiology
... carefully presented sensory stimuli. The sensory stimuli
administered were vestibular, in which the mouse's... physically and quantitatively." From responses to stimuli
and the running wheel experiments, Pfaff and his colleagues found that the sensory alertness and the...
Brain links non-food images with eating -- But only when hungry, study suggests
...tion of food from various sights, sounds, or other stimuli
may play a role in compulsive eating, according to...ity to make connections between eating and various stimuli
in one's environment is a fundamental part of learning that is probably common, to some degree, in a...
Natural fat compound may be basis for new class of drugs targeting obesity
...s, fats that are produced in response to metabolic stimuli
and nervous system activity. OEA is related to a neurotransmitter known as anandamide, which is similar to marijuana's active ingredient and controls a number of nervous system functions. When food is ingested, OEA is manufactured in the small intest...
Fruit fly pheromone receptor first ever discovered linked to specific sexual behavior
... many animals -- including humans -- that serve as stimuli
to evoke behavioral responses in other individuals of the same species. Pheromones often attract members of the opposite sex and provide important cues during courtship and mating. Yet little is known about pheromone receptors, which are the protein ...
Vascular disease and aging
...ut also impair compensatory adaptations to various stimuli
including shear force and injury. Other studies have demonstrated a progressive increase in oxidative stress, activation of inflammatory mediators, and increasing endothelial dysfunction in both humans and animals. Yet individuals and certain roden...
RSRF-funded study leads to breakthrough for Rett Syndrome research
...to BDNF, again locking the deadbolt until neuronal stimuli
start the process again. Greenberg and Jaenisch say they have never before witnessed this kind of process. "I find this to be an extremely exciting new development. It is particularly gratifying that RSRF support facilitated the Jaenisch study. RSRF...
JCI Table of Contents, November 3, 2003
...rier, which protects against foreign environmental stimuli
and injury. These findings are reported in the Nov...lates gene expression in response to environmental stimuli
such as xenobiotics and hypoxia. To examine its role in the epidermis, Takeda and colleagues disrupt...
Don't always believe what you see, suggests study on false memories
... time. "False memories can be created using visual stimuli
with minimal language input," Beversdorf said. "The question now is whether this can be done entirely without the use of semantics." Beversdorf plans to apply these findings and this research model to future studies on autistic people. In previous ...
Tips from the Journals of the American Society for Microbiology
...e causing weakness, lethargy and slow responses to stimuli
began appearing in American lobsters pulled from the Gulf of Maine. In the study, the researchers identified a group of Vibrio fluvialis-like bacteria in samples taken from sick lobsters as the cause of this disease. While V. fluvialis has been kno...
Alcoholics with antisocial personality disorder have blunted emotional reactivity
... looks at reduced or 'hypo' reactivity to aversive stimuli
as evidence for poor inhibition, which may result ... increase of startle in response to the unpleasant stimuli
or the decrease in response to pleasant stimuli. In short, their emotional responses appeared to be...
Mars mission scientist will live a 25-hour day
...rs must keep a longer day while exposed to outside stimuli
that run on an exact 24-hour cycle.The entire rove...step outside, they will be bombarded with external stimuli
running on the 24-hour clock to which their bodies are accustomed. "We decided we needed to get som...
Adolescent brains show reduced reward anticipation
...rom risky behaviors--or seek out alcohol and other stimuli
because they require enhanced stimulation. They also may help to explain why so many young people have difficulty achieving long-term goals," according to James Bjork, Ph.D., first author on the study. When the researchers examined brain activity fo...
UW study: Baby's face lights up emotional center of new mom's brain
... of emotions elicited or in the reliability of the stimuli
such as pictures, tastes or sounds to produce a po...studies, Nitschke and his colleagues wanted to use stimuli
that evoke powerful feelings of positive emotion, such as warmth, joy and fulfillment. "There's on...
Rich genes travel more
... temporal oscillations, responses to environmental stimuli
and developmentally determined or tissue-specific gene regulation, and underlies the heterogeneous distribution of gene expression. The distribution of gene expression can be described using what is known as a "power law" distribution. In such a syst...
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