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6964253 
Journal Article 
Sleeping like a baby--does gender influence infant arousability? 
Richardson, HL; Walker, AM; Horne, RS; , 
2010 
1 
Sleep
ISSN: 0161-8105 
English 
20815186 
Victims of the sudden infant death syndrome (SIDS) may have preexisting abnormalities in their arousal pathways, inhibiting the progression of subcortical activation (SCA) to full cortical arousal (CA). Approximately 60% of SIDS victims are male, and it has been suggested that male infants have delayed cortical maturation compared to females. We hypothesized that CA frequency would be lower and CA threshold would be higher in male infants during both active (AS) and quiet (QS) sleep.