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Updated: Jan 2, 2026
Non-invasive Optical Measurement of Cerebral Metabolism and Hemodynamics in Infants
Published on: March 14, 2013
Cerebral blood flow in 5- to 8-month-olds: Regional tissue maturity is associated with infant affect
M Catalina Camacho1, Lucy S King2, Amar Ojha2
1Washington University in St. Louis, St. Louis, MO, USA.
Insights
Infant brain blood flow increases with age, reflecting maturity. Higher blood flow in certain brain regions correlates with infant temperament and emotional responses, offering insights into early affective neurodevelopment.
Area of Science:
- Neuroscience
- Developmental Psychology
- Pediatrics
Background:
- Infancy involves rapid neural and emotional growth, but the brain-emotion link is unclear.
- Current brain imaging (BOLD signal) is difficult to interpret in infants due to immature brain-blood flow links.
- Regional cerebral blood flow (rCBF) offers a way to assess brain maturity and its relation to infant emotions.
Purpose of the Study:
- To investigate the relationships between regional cerebral blood flow (rCBF), infant age, temperament, and emotional reactivity/recovery.
- To understand how brain development, measured by rCBF, relates to affective behaviors in infancy.
Main Methods:
- 107 mothers reported infant temperament; 38 infants underwent perfusion MRI to measure rCBF during sleep.
- Infants and mothers participated in the Still-Face Paradigm to assess infant emotional responses to stress.
- Statistical analyses examined associations between infant age, temperament, affect, and voxel-wise rCBF.
Main Results:
- Infant age positively correlated with rCBF across most brain regions, indicating developmental maturity.
- Negative Affect temperament and positive affect recovery after stress were linked to higher rCBF in regions like the orbitofrontal cortex.
- Findings suggest prefrontal cortex maturity may relate to both negative affect and better recovery from stress.
Conclusions:
- Regional cerebral blood flow (rCBF) serves as a marker for neural maturity in infants.
- Specific patterns of rCBF are associated with infant temperament and emotional regulation.
- This research provides valuable insights into the neurodevelopment of emotional processes during infancy.
Abstract:
Infancy is marked by rapid neural and emotional development. The relation between brain function and emotion in infancy, however, is not well understood. Methods for measuring brain function predominantly rely on the BOLD signal; however, interpretation of the BOLD signal in infancy is challenging because the neuronal-hemodynamic relation is immature. Regional cerebral blood flow (rCBF) provides a context for the infant BOLD signal and can yield insight into the developmental maturity of brain regions that may support affective behaviors. This study aims to elucidate the relations among rCBF, age, and emotion in infancy. One hundred and seven mothers reported their infants' (infant age M ± SD = 6.14 ± 0.51 months) temperament. A subsample of infants completed MRI scans, 38 of whom produced usable perfusion MRI during natural sleep to quantify rCBF. Mother-infant dyads completed the repeated Still-Face Paradigm, from which infant affect reactivity and recovery to stress were quantified. We tested associations of infant age at scan, temperament factor scores, and observed affect reactivity and recovery with voxel-wise rCBF. Infant age was positively associated with CBF in nearly all voxels, with peaks located in sensory cortices and the ventral prefrontal cortex, supporting the formulation that rCBF is an indicator of tissue maturity. Temperamental Negative Affect and recovery of positive affect following a stressor were positively associated with rCBF in several cortical and subcortical limbic regions, including the orbitofrontal cortex and inferior frontal gyrus. This finding yields insight into the nature of affective neurodevelopment during infancy. Specifically, infants with relatively increased prefrontal cortex maturity may evidence a disposition toward greater negative affect and negative reactivity in their daily lives yet show better recovery of positive affect following a social stressor.
