Abstract: An electronic device such as a wristwatch may be provided with conductive structures. The conductive structures may include a sensor electrode for an electrocardiogram (ECG) sensor. A coating may be disposed on the sensor electrode to reflect particular wavelengths of visible light so that the sensor electrode exhibits a desired color. The coating may include adhesion and transition layers on the sensor electrode, an opaque coloring layer on the adhesion and transition layers, and a thin-film interference filter on the opaque coloring layer. The thin-film interference filter may have an uppermost diamond-like carbon (DLC) layer. The DLC layer may contribute to the color response of the coating while concurrently minimizing noise in ECG waveforms gathered by the ECG sensor using the sensor electrode.

Abstract: The present invention provides, inter alia, methods and pharmaceutical compositions for treating or ameliorating an effect of proximal spinal muscular atrophy (SMA) and methods for preventing or slowing motor neuron death in a subject having SMA. The methods include administering to a subject in need thereof a modulator of a gene selected from the group consisting of phosphodiesterase 1c (Pde1c), Calbindin 2 (Calb2), Egl nine homolog 3 (Eg13), Metabotropic glutamate receptor 8 (mGluR8), Syn aptotagmin 1 (Syt1), CUGBP, Elav-like family member 4 (Celf4), and combinations thereof in an amount effective to treat or ameliorate an effect of SMA. Also provided are methods for preventing or slowing motor neuron death.