Siri Hustvedt

As one of four daughters, I grew up with an imaginary brother - wondering what it would have been like if one of us had been a boy. There's no question that there was a phantom boy child in my imagination when I was young.

Both depression and anxiety disorders, for example, are repeatedly described in the media as 'chemical imbalances in the brain,' as if spontaneous neural events with no relation to anything outside a person's brain cause depression and anxiety.

I could have had a session of defecography, which is a diagnostic test in which X-rays are taken to assess anatomical problems occurring during the process of defecation. I gave it the briefest of thoughts before recognizing that this is beyond the pale - even for me.