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. Author manuscript; available in PMC: 2023 Mar 1.
Published in final edited form as: Addict Neurosci. 2022 Dec 9;5:100057. doi: 10.1016/j.addicn.2022.100057

Fig. 5. Principal component analysis.

Fig. 5.

The behavioral measures were analyzed separately for each group (ShA and LgA) by a Varimax-normalized PCA. Factor loadings ≥ 0.6 were considered. Black symbols represent all measures that loaded on factor 1 (x-axis). Orange circles represent measures that loaded on factor 2 (y-axis). The blue circle represents the only measure that loaded on factor 3. SWD, precipitated (somatic) withdrawal; PR, progressive ratio; vF, von Frey mechanical nociception (n = 8/sex/group).