TABLE 2.

Regions with changed dfALFF between patients with CI and HCs.

Brain regions		L/R	Cluster size (voxels)	Peak MNI coordinates			t-values
AAL	Brodmann			x	y	z
CI>HC
Insula	BA48	L	195	–39.5	5.5	–12.5	5.08
Superior temporal gyrus	BA48	R	230	50.5	–2.5	–4.5	5.46
Parahippocampal	BA30	L	81	–17.5	–28.5	–18.5	5.20
Amygdala	BA34	R	83	24.5	5.5	–18.5	4.89
Cerebelum_9	/	L	176	–13.5	–44.5	–48.5	5.11
Cerebelum_9	/	R	88	14.5	–34.5	–44.5	4.69

AAL, anatomical automatic labeling; MNI, Montreal Neurological Institute; L, left hemisphere; R, right hemisphere; dfALFF, the dynamic fractional amplitude of low-frequency fluctuations; CI, chronic insomnia; HC, healthy control.