Book 2 Chapters 7-10

In the dream he (Winston) had remembered his last glimpse of his mother, and within a few moments of waking the cluster of small events surrounding it had all come back. It was a memory that he must have deliberately pushed out of his consciousness over many years. He was not certain of the date, but he could not have been less than ten years olf, possibly twelve, when it had happened (133). 

Winston used to have little to no recollection of his dream and it appears that Big Brother is controlling people minds in a sense that they are suppressing the emotions of people because if people have emotions then they are capable of thinking for themselves which is something Big Brother doesn't want. Winston does notice that people seem dull and lack of emotion; people in the party tend to have to relearn what was suppressed. Big Brother is very controlling on what people remember and on what they don't remember and they did not want Winston to remember his mother. 

Winston explains how he remembers seeing a severed hand on the ground and how he kicked it into the gutter "as though it had been a cabbage stalk" meaning that he had little to no thought about the hand he had kicked (137). For me, if I were to see a severed hand on the ground I would be utterly disgusted and be in a little fear because who knows where the hand came from. Winston shows how he has no emotions based on the fact he did not give a second thought about the severed hand because expressing no emotion is the norm, according to Big Brother at least.