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Changhuei Yang Develops "Microscope on a Chip"

07-28-08

Changhuei Yang, Assistant Professor of Electrical Engineering and Bioengineering, and colleagues have turned science fiction into reality with their development of a super-compact high-resolution microscope, small enough to fit on a finger tip. This "microscopic microscope" operates without lenses but has the magnifyingpower of a top-quality optical microscope, can be used in the field to analyze blood samples for malaria or check water supplies for giardia and other pathogens, and can be mass-produced for around $10. [Caltech Press Release]

Tags: EE research highlights Changhuei Yang MedE health

Melissa Saenz and Christof Koch Show that Sight Recovery After Blindness Offers New Insights on Brain Reorganization

05-29-08

Studies of the brains of blind persons whose sight was partially restored later in life have produced a compelling example of the brain's ability to adapt to new circumstances and rewire and reconfigure itself. The research, conducted by postdoctoral researcher Melissa Saenz along with Christof Koch, the Lois and Victor Troendle Professor of Cognitive and Behavioral Biology and professor of computation and neural systems, and their colleagues, shows that the part of the brain that processes visual information in normal individuals can be co-opted to respond to both visual and auditory information. [Caltech Press Release]

Tags: EE research highlights health Christof Koch

Athanassios Siapas and Evgueniy Lubenov Reveal the Driving Factor in the Brain's Self-regulation

04-18-08

Using computer models of neuronal circuits and experiments on live rats, Athanassios Siapas, Assistant Professor of Computation and Neural Systems, and his postdoctoral researcher Evgueniy Lubenov are revealing the curious mechanism by which the brain spontaneously tips itself toward a state balanced between order and chaos. The driving factor in the brain's self-regulation, they say, is the timing of neural pulses. "Networks self-organize to an intermediate state, in between the two extremes," Siapas says.

Tags: EE research highlights health Athanassios Siapas

 
Gordon Moore and Carver Mead Discuss Electronics Revolution

03-27-08

Gordon Moore (PhD '54) and Carver Mead (BS '56, MS '57, PhD '60), Gordon and Betty Moore Professor of Engineering and Applied Science, Emeritus, chat about the electronics revolution (posted on You Tube in late 2007, conversation begins about 19 minutes into the clip).

Tags: EE research highlights Carver Mead Gordon Moore

Christof Koch and Colleagues Find Pupil Dilation Marks Decision Making

02-12-08

Christof Koch, the Troendle Professor of Cognitive and Behavioral Biology and Professor of Computation and Neural Systems, and his colleagues, have found that changes in pupil diameter correspond to the moment when a simple decision is made. The pupil, which is about 2 mm wide in bright light, dilated by as much as 1 mm at that moment--a change that, in theory, could be noticeable to a casual observer. [Caltech Press Release]

Tags: EE research highlights health Christof Koch