The origins of AChE-containing proections in the cingulate areas were studied by tracing method of AChE combinfng with HRP. Our results as follows: Some AChE-positive neurons in the ventral part of the vertical limb of the diagonal band(VDB) proective to the areas 24

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23 and 29 of cingulate cortex. Some AChE-positive neurons in the horizontal limb of the diagonal band (HDB) projective to the areas 24 and 23 of cingulate cortex. The areas 24 and 32 of cingu1ate cortex receive the proection of AChE-positive neurons from the dorsal raphe nucleus. Some AChE-positive neurons in the locus coerleus proective to the areas 24

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23 and 29 of cingulate cortex. Some AChE-positive neurons in the claustrum projective to the areas 24

25 and 23 of cingulate cortex. The area 25 of cingulate cortex receives the proection of AChE-positive neurons from the lateral hypothalamic nucleus. The area 32 of cingulate cortex receives the projection of AChE-positive neurons from the ventral tegmental area.