Table 2. Recent functional neuroimaging (fMRI, MEG, EEG) studies of individuals with prenatal alcohol exposure.
Brain region | Modality | Findings | References |
---|---|---|---|
| |||
Whole Brain | fMRI | • ↓ Baseline functional connectivity ↓ Deactivation of default mode network during in dysmorphic group only |
• Santhanam et al. [59] |
• ↓ Interhemispheric connectivity during resting state | • Wozniak et al. [60] | ||
• Abnormal functional connectivity during resting state: ↑ characteristic path length ↓ network global efficiency |
• Wozniak et al. [61] | ||
| |||
Frontal | EEG | • Slower P2 latencies during go/no-go task ↓ FN400 amplitude on continuous recognition memory task |
• Burden et al. [78] |
MEG | • Difference in gamma power in R frontal area during saccades | • Stephen et al. [42] | |
fMRI | • ↑ Bilateral middle frontal and L superior frontal activity during SWM ↑ L middle frontal activity during SWM vs. FHP |
• Norman et al. [49] | |
• ↑ Activity in R inferior frontal, middle frontal, paracentral and precentral regions during SWM vs. ADHD | • Malisza et al. [46] | ||
• ↓ Activity in bilateral anterior cingulate, R orbitofrontal and R frontal pole during SWM vs. MAA | • Roussotte et al. [79] | ||
• ↑ Activity in anterior cingulate and R medial frontal gyrus during go/no-go task ↓ Precentral activity on cued trials during go/no-go task |
• O'Brien et al. [44] | ||
• ↑ L dorso-prefrontal activity during working memory in non-syndromal children vs. both FAS/pFAS and control ↓ Activity in Broca's area during working memory in FAS/pFAS vs. both control and non-syndromal children |
• Diwadkar et al. [54] | ||
• Global efficiency during resting state positively correlates to cortical thickness in frontal region | • Wozniak et al. [61] | ||
| |||
Parietal | MEG | • Difference in gamma power in R parietal area during saccades | • Stephen et al. [42] |
fMRI | • ↑ L precuneus, superior parietal and R superior parietal activity during SWM ↑ L posterior cingulate, bilateral postcentral, precuneus and R inferior parietal activity during SWM vs. ADHD |
• Malisza et al. [46] | |
• ↑ Precuneus activity during SWM vs. FHP | • Norman et al. [49] | ||
• ↑ Activity in L precuneus and cingulate gyrus during go/no-go task ↓ L postcentral activity on cued trials during go/no-go task |
• O'Brien et al. [44] | ||
• Global efficiency during resting state positively correlates to cortical thickness in parietal region | • Wozniak et al. [61] | ||
| |||
Temporal | SPECT | • ↓ Tracer activity bilaterally | • Codreanu et al. [80] |
MEG | • Delayed latency of M100 and M200 in bilateral superior temporal gyrus during auditory processing | • Stephen et al. [40] | |
fMRI | • ↓ Activity in L middle temporal, sub-gyral, parahippocampal and bilateral superior temporal regions during SWM ↑ Activity in R parahippocampal, R middle temporal, bilateral superior temporal and fusiform during SWM vs. ADHD |
• Malisza et al. [46] | |
• Global efficiency during resting state positively correlates to cortical thickness | • Wozniak et al. [61] | ||
| |||
Occipital | MEG | • Delayed response latency of M100 during visual processing | • Coffman et al. [71] |
• Difference in gamma power in L occipital-temporal area during saccades | • Stephen et al. [42] | ||
fMRI | • ↑ L lingual and cuneus activity during SWM | • Norman et al. [49] | |
• ↓ L lingual and inferior occipital activity during SWM | • Malisza et al. [46] | ||
• ↑ Cuneus activity during SWM vs. both control1 and FHP2 | • Malisza1 et al. [46]; Norman2 et al. [49] |
||
• ↑ L cuneus and R middle occipital activity during SWM vs. ADHD | • Malisza et al. [46] | ||
• ↓ Activity in L precuneus vs. MAA | • Roussotte et al. [79] | ||
| |||
Insula | fMRI | • ↑ Activity during SWM vs. control1, FHP1, and ADHD2 | • Norman1 et al. [49]; Malisza2 et al. [46] |
• ↓ Activity in R insula during SWM | • Malisza et al. [46] | ||
• ↓ R insula during SWM vs. MAA | • Roussotte et al. [79] | ||
| |||
Cerebellum | fMRI | • ↓ Culmen activity during SWM ↑ Activity in R culmen during SWM vs. ADHD |
• Malisza et al. [46] |
• ↑ Activity during working memory in FAS/pFAS vs. both control and non-syndromal children | • Diwadkar et al. [54] | ||
| |||
Basal Ganglia | SPECT | • ↓ Tracer activity bilaterally | • Codreanu et al. [80] |
fMRI | • ↑ Activity in L lentiform nucleus during SWM | • Norman et al. [49] | |
• ↑ Activity in R lateral globus pallidus during SWM ↑ R claustrum activity during SWM vs. ADHD |
• Malisza et al. [46] | ||
• ↓ Activity in bilateral caudate and putamen during SWM vs. MAA | • Roussotte et al. [79] | ||
• ↓ Functional connectivity between caudate and lateral prefrontal subregions during SWM ↓ Functional connectivity between caudate and R medial temporal region during SWM ↑ Functional connectivity between putamen, superior and inferior frontal regions during SWM |
• Roussotte et al. [81] | ||
• ↑ L striatum activity during working memory in non-syndromal children vs. both FAS/pFAS and control | • Diwadkar et al. [54] | ||
| |||
Diencephalon | PET | • ↓ Tracer activity in bilateral thalami | • Codreanu et al. [80] |
fMRI | • ↓ L thalamus activity during SWM ↑ Bilateral thalamus activity during SWM vs. ADHD |
• Malisza et al. [46] | |
| |||
Amygdala | fMRI | • ↓ R amygdala activity during SWM | • Malisza et al. [46] |
| |||
Midbrain | fMRI | • ↓ Brainstem and L red nucleus activity during SWM ↑ R red nucleus activity during SWM |
• Malisza et al. [46] |
If no contrast group is specified, findings show differences in individuals with prenatal alcohol exposure relative to non-exposed controls
L left, R right, EEG electroencephalography, PET positron emission tomography, fMRI functional magnetic resonance imaging, MEG magnetoencephalography, SPECT single-photon emission computed tomography, FHP non-exposed contrast group with a positive family history of alcoholism, ADHD non-exposed contrast group with attention deficit/hyperactivity disorder, MAA contrast group with prenatal exposure to methamphetamine and alcohol, FAS Fetal Alcohol Syndrome, pFAS = partial Fetal Alcohol Syndrome, SWM = spatial working memory task