Table 2.
Details of the studies included in this meta-analysis
| First Author and Date | Brain Region (Frequency Band) | Coherence | Participants ASD/TD | Cohen’s d (Max) |
|---|---|---|---|---|
| Chan et al. (2011) | Short- and long-range fronto-posterior (Theta) | Enhanced | 21/21 | 1.239 |
| Mathewson et al. (2012) | Short intrahemispheric, posterior (Alpha) | Reduced | 15/16 | 1.412 |
| long-range intrahemispheric, frontocentral (Alpha) | Reduced | |||
| Lzarev et al. (2010) | Intrahemispheric, frontocentral (entire frequency range) | Reduced | 18/14 | 0754 |
| Lzarev et al. (2010) | Short- and long-range (Delta & Theta) | Reduced | 6/8 | 2.701 |
| Frontal-temporal (Delta) | Enhanced | |||
| Frontal-temporal (Theta) | Enhanced | |||
| Léveille et al. (2010) | Short- and long-range intrahemispheric, Occipital (entire frequency range) | Enhanced | 9/13 | 0.923 |
| Short- and long-range intrahemispheric, Frontal (entire frequency range) | Reduced | |||
| Duffy & Als (2012) | Short- and long-range intrahemispheric (Theta) | Reduced | 447/99 | 0.842 |
| Short- and long-range intrahemispheric (Alpha) | Reduced | |||
| Frontal-temporal (Beta) | Reduced | |||
| Short- and long-range intrahemispheric (Beta) | Reduced | |||
| Coben & Mayers (2008) | Short- and long-range intrahemispheric (Delta & Theta) | Reduced | 20/20 | 0.949 |
| Interhemispheric Frontal (Delta & Theta) Temporal (Delta & Theta) Central/parietal/occipital (Delta & Theta) |
Reduced | |||
| Interhemispheric Temporal (Alpha) | Reduced | |||
| Interhemispheric Central/parietal/occipital (Beta) | Reduced | |||
| Yeung et al. (2014) | Short- and long-range, fronto- posterior, and frontal (Theta) | Reduced | 18/18 | 0.727 |
| Sheikhani et al. (2012) | Short- and long-range intrahemispheric, Frontal-temporal, and Frontal-Central | Reduced | 17/11 | 1.793 |
| Temporal (Gamma) | Enhanced | |||
| Barttfeld et al. (2011) | Lateral-frontal intrahemispheric (Delta) | Enhanced | 10/10 | 1.910 |
| Middle frontal (Delta) | Reduced | |||
| Occipital (Delta) | Reduced |
ASD= Autism spectrum disorder; TD= Typically-developing children