Researchers identify unique circadian rhythm photoreceptor
...uch arrhythmia. "To find that these flies remain rhythmic under constant light really starts to prove that d..., Rosbash says, because they show the normal daily rhythmic cycle of light-dark activity, even with the presumably crippled photoreceptor molecules. "One poss...Cerebral cortex cells may pulse electrical rhythm through the brain
...'pacemaker' for generating some of the brain's rhythmic electrical activity, the kind measured by an EEG," Connors said. The other electrical network of inhibitory neurons described in the study, called FS neurons, seems to be more directly involved in the processing of sensory information, he sa...Experiments illuminate workings of biological clocks
...ually helpoptimize drug treatments affected by the rhythmic changes in the human body'shormone levels. In the September 10, 1999, issue of the journal Science , HHMIinvestigator AmitaSehgal and colleagues at the University of Pennsylvania School of Medicineshow how light causes cells to break down a key b...Two Brandeis Scientists Shed Light On The First Photoreceptor Known To Set Circadian Rhythms
...-- need daily resetting toaccurately regulate many rhythmic functions within the body. The two biologists authored back-to-back papers in the Nov. 25 issue ofCell. The Rosbash lab's paper principally characterizes the wild-type form ofthe cry gene, while the Hall lab's examines its mutant variation. ...... songs (Meeting Paper 4aAB1). Whales generatelong rhythmic patterns of sound, and some sounds can travel hundreds of milesunderwater. Analyzing "the remarkable cadence" of these patterns, ChristopherClark of Cornell University (607-254-2408) will show that whales can retain arhythm even after minutes of sile...Biggest Acoustics Meeting Ever
...heir behavior and physiology. Whales generate long rhythmic patterns of sound, and somesounds can travel hundreds of miles underwater. Analyzing "the remarkable cadence" of these patterns,Christopher Clark of Cornell University ( cwc2@cornell.edu ) will show that whales can retain a rhythmeven after minutes o...SFSU Biologist Deciphers Desert Animals' Whistles And Drumbeats
...r to their colony." An upright posture or moderate rhythmic whistling evokes vigilance from family members, but no fleeing. But when an adult speeds up to double-time whistling and foot thumping, kinfolk head for the burrows. The increased vulnerability to predation faced by animals active during the ...A Drug Pump On A Computer Chip
...and forces," Huff said. To operate the pump, rhythmic pulses of mild electrical current are passed directly through the alloy, setting up a cycle of heating and cooling that causes the metal to flex. This forces the chamber to expand and contract. The expansion pulls fluid into the chamber through an in......py of the gene lifts one wing and vibrates it in a rhythmic song, asrecorded on an oscilloscope below the draw...-- from its first interest in a female through its rhythmic courtingsong, to its attempts to mate. Part of a group of genes that work together to govern all asp...