The Human Frontal Lobes and Frontal Network Systems: An Evolutionary, Clinical, and Treatment Perspective

Table 16

Intrinsic connectivity network patterns in dementias.

Dementia subtype	Intrinsic connectivity pattern
Alzheimer	Default mode network shows reduced connectivity
FTD behavioral variant	Salience network shows reduced connectivity
Parkinson’s	BN-thalamocortical loops show; increased connectivity
DLBD	Uncertain at present but may show ascending brainstem projection system
CBG	Uncertain

FTD: frontotemporal lobe disorder, DLDB: diffuse lewy body disease, BN: basal nuclei (basal ganglia), CBG: corticobasal-ganglionic disorder.
Adapted and modified from [35].