Table 1.

Experiment 1 (fMRI), N = 17: Task-related activation during visual stimulation.

Contrast, brain region & HRF	Coordinates			z-value	Cluster size
	x	y	z
Main effect emotion
L Hippocampus (T)	− 6	− 11	10	3.09	5
Main effect: attachment
L rostral composite gyrus (T)	− 15	8	10	4.39	9
Encephalon (white matter)	− 10	− 9	7	3.88	9
L postcruciate gyrus (P)	− 12	3	13	3.86	8
R insula (T)	13	− 8	3	3.34	6
L rostral cingulate (T)	− 3	2	13	3.28	5
R rostral cingulate (T)	4	6	10	3.13	5
R rostral composite gyrus (F)	13	0	10	3.07	7
R insula (T)	14	− 12	6	2.98	5
Interaction: emotion × attachment*
L postcruciate gyrus (P)	− 10	3	13	3.72	5
R postcruciate gyrus (P)	10	− 2	18	3.61	6
R cerebellum	7	− 29	− 8	3.53	8
Encephalon (white matter)	13	− 2	9	3.50	6
Encephalon (white matter)	− 12	− 11	6	3.20	5
Optical nerve	1	2	− 4	3.19	5
Mesencephalon	− 6	− 14	− 4	3.16	5
R parahippocampal gyrus (T)	10	− 20	− 8	3.01	5

Main and interaction effects were tested for significance with a cluster-defining threshold of p < 0.005 uncorrected and a minimum cluster size of 5 voxels. The first local maximum within each cluster is reported; coordinates represent the location of peak voxels and refer to the canine breed-averaged template⁶⁵. The template along with another single dog template⁶⁶ served to determine anatomical nomenclature for all tables. See Table 2 for contrasts most relevant for the present study; Supplementary Table S3 contains further contrasts for full transparency.

O occipital lobe, T temporal lobe, P parietal lobe, O occipital lobe, L left, R right.