Are there any studies about childhood emotional neglect and the siblings of special needs children?

This is hard to admit but I suffered from childhood emotional neglect. I believe it's the source of the emptiness I feel and my inability to connect. My parents weren't emotionally neglectful on purpose, the reason for their neglect was their focus on my brother with autism. It makes it even more difficult because I spent my childhood watching my parents be the parents I needed to my brother and not me. I was expected to not need parenting. My parents talked to me in logic, not emotion. If I was upset, my mom would tell me how tired she was and how she didn't have time to deal with whatever I was upset about. It was like they would talk me out of my own feelings.

I've been in therapy but my therapist seems to sometimes be siding with my parents. I don't think therapists want to hear what I have to say.