Hey Sweet Pea!
Yup, those big guys centered in the pic are old pseudobulbs. They used to have leaves, but they loose them over time. Nothing to worry about, nothing special to do.
They won't bloom again or grow new leaves, but you may get a new p-bulb start growing from underneath. Also the plant is still using them for stored water and energy, so leave them be.
Post another pic so we can see the whole plant. And welcome the Orchid Board - where there are NO stupid questions. See you around the forums!