Vibrational Profiling of Brain Tumors and Cells.

This study reports vibration profiles of neuronal cells and tissues as well as brain tumor and neocortical specimens. A contact-free method and analysis protocol was designed to convert an atomic force microscope into an ultra-sensitive microphone with capacity to record and listen to live biological samples. A frequency of 3.

The role of multilayers in preventing the premature buckling of the pulmonary surfactant.

The pulmonary surfactant is a protein-lipid mixture that spreads into a film at the air-lung interface. The highly-compacted molecules of the film keep the interface from shrinking under the influence of otherwise high surface tension and thus prevent atelectasis. We have previously shown that for the film to withstand a high film pressure without collapsing it needs to assume a specific architecture of a molecular monolayer with islands of stacks of molecular multilayers scattered over the area.

Auditory cortex directs the input-specific remodeling of thalamus.

Input-specific remodeling is observed both in the primary auditory cortex (AI) and the ventral division of the medial geniculate body of the thalamus (MGBv) through motivation such as learning. Here, we show the role of AI in the MGBv remodeling induced by the electrical stimulation (ES) of the central division of the inferior colliculus (ICc). For the MGBv neurons with frequency tunings different from those of electrically stimulated ICc neurons, their frequency tunings shifted towards the tunings of the ICc neurons.