Search results for author:(John Hewitt)

Optics & Photonics Aug 15, 2017

Pure optical detection of spikes for the ultimate brain machine interface

(Phys.org)—Brain-machine interfaces (BMIs) are basically gimmicks. The reason you don't hear so much about them these days is because, in the fullness of time, significant tangible benefit to a user has flat out failed ...

Cell & Microbiology Nov 14, 2016

Checkmate for Castleman disease

(Phys.org)—Dr. David Fajgenbaum is the founder of Castleman Disease Collaborative Network. Its goal is to organize patients with Castleman disease (CD), find an explanation for this rare and enigmatic immunological disorder ...

Biochemistry Jun 7, 2016

Using the 'deuterium switch' to understand how receptors work

(Phys.org)—The market value for deuterated drugs has recently been estimated at over a billion dollars. Such drugs are simply molecules in which one or more hydrogen atoms are replaced with deuterium. While these kinds ...

Biochemistry Apr 26, 2016

The jumping Frenchmen of Maine and the ineluctable requirement of molybdenum

(Phys.org)—The Jumping Frenchmen of Maine is a puzzling neurological syndrome named after a few peculiar 19th-century lumberjacks. Their defining symptom was an unnaturally exaggerated jumping reflex when startled. Georges ...

Cell & Microbiology Feb 24, 2016

Mapping the nuclear pore complex: 1.5 billion years of innovation

(Phys.org)—If asked to describe the differences between humans and frogs, a child might say that one hops and rib-its while the other walks and talks. If we ask that same child how to build a frog, they will probably need ...

Biochemistry Feb 22, 2016

New evidence for the vibration theory of smell

(Phys.org)—The predictive power and galvanizing influence that theoretical models routinely enjoy in physics is only rarely replicated in biology. Lord Raleigh's theory of sound perception, Francis Crick's sequence and ...

Biotechnology Oct 8, 2015

Researchers massively edit the genome of pigs to turn them into perfect human organ donors

(Phys.org)—One benefit of the closeness between pigs and humans is the potential to be organ donors. There are however, just a few nagging uncertainties that still stand in the way. The big one, the possibility of porcine ...

Biotechnology Sep 23, 2015

The hidden evolutionary relationship between pigs and primates revealed by genome-wide study of transposable elements

(Phys.org)—In the past, geneticists focused primarily on the evolution of genes in order to trace the relationships between species. More recently, genetic elements called SINEs (short interspersed elements) have emerged ...

Cell & Microbiology Sep 3, 2015

Macrophages create the elusive spermatogonial stem cell niche

(Phys.org)—Every organ strikes its own balance between self-renewal and differentiation. At one extreme is the brain, where only a few isolated outposts are known to contribute to a largely quiescent population. At another ...

Quantum Physics Aug 27, 2015

Neural qubits: Quantum cognition based on synaptic nuclear spins

(Phys.org)—The pursuit of an understanding of the base machinery of the mind led early researchers to anatomical exhaustion. With neuroscience now in the throes of molecular mayhem and a waning biochemical bliss, physics ...

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