I have experienced this at times of stress. Sometimes its like my head is moving forward even though I'm lying down or sitting in one place. Its like, wo, head, comeback here! Sometimes when I'm stressed and my heart is beating fast I close my eyes to try to rest and I see pasley designs that are multicolored and grow huge then explode into hundreds of teenie tiny pasleys. My dad used to wear pasley ties. I think that's where this weird visual head stuff comes from. Needless to say, its weird and doesn't feel good.