text: Research involving human participants, their data, or biological material 
  
  Policy information about studies with human participants or human data. See also policy information about sex, gender (identity/presentation), 
  and sexual orientation and race, ethnicity and racism. 
  
  Reporting on sex and gender  Our study focused on a single female participant to explore how pregnancy shapes the human brain. 
  
  Reporting on race, ethnicity, or 
  other socially relevant 
  groupings 
  
  The subject was white. 
  
  Population characteristics  This was a precision imaging study of one 38-year old primiparous woman. 
  
  Recruitment 
  
  Our participant (corresponding author E.R.C.) was a healthy primiparous woman who underwent in-vitro fertilization (IVF) to 
  achieve pregnancy. The project was conceived by E.R.C. and she wished to use herself as the participant, as has been done in 
  previous "dense-sampling" studies (cf. Poldrack et al., 2015; Pritschet et al., 2020). 
  
  Ethics oversight 
  The participant gave written informed consent and the study was approved by the University of California, Irvine Human 
  Subjects Committee. 
  
  Note that full information on the approval of the study protocol must also be provided in the manuscript. 