A medical trial to test the possible health benefits of LSD for patients nearing the end has recently been announced in Switzerland — it’s the first study of its kind in 35 years. We’re guessing (or hoping) those health benefits look something like this: sunny, happy, black-and-white, and so sweetly blurry around the edges. More gentle psychedelia is up at Bonni Benrubi Gallery through May 31 in a collection of luminous black-and-whites by Matthew Pillsbury. —Emma Pearse