Table 2 Summary of associations between OXTR binding in the PSB and average pair mate affiliation states.

From: Oxytocin receptor binding in the titi monkey hippocampal formation is associated with parental status and partner affiliation

Affiliation measure and brain region

Pearson correlation

Spearman rank correlation

Linear regression (affiliation ~ OXTR + pair tenure)

r

ρ

βOXTR

βPair Tenure

Proximity

Tot. PSB

− 0.88*

− 0.83*

− 0.76*

0.26

PSB1

− 0.80*

− 0.67†

− 0.64*

0.31

PSB3

− 0.88*

− 0.88*

− 0.79*

0.24

Contact

Tot. PSB

− 0.91*

− 0.83*

− 0.80*

0.21

PSB1

− 0.84*

− 0.67†

− 0.71*

0.25

PSB3

− 0.91*

− 0.88*

− 0.84*

0.18

Tail twine

Tot. PSB

− 0.54

− 0.43

− 0.28

0.75*

PSB1

− 0.46

− 0.48

− 0.21

0.78*

PSB3

− 0.60

− 0.55

− 0.35

0.72*

  1. The table shows the associations between OXTR binding in PSB1, PSB3, and the total presubiculum with averaged pair mate Proximity, Contact, and Tail Twining. There were eight subjects with available data for these analyses. The first column contains the Pearson r correlation between the average affiliation state and the average OXTR binding density. The second column contains the Spearman rho correlation coefficient. The third and fourth columns contain the beta estimates for a linear regression model in which the average affiliation state was predicted by average OXTR binding when pair tenure (the amount of time the subject had been with its pair mate when affiliation data first began to be collected) was controlled. *p < 0.05; †p < 0.10.
  2. PSB1 presubiculum layer 1, PSB3 presubiculum layer 3, Tot. PSB total presubiculum area (including PSB1 and PSB3).
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