Mouse

PAG (Periaqueductal gray) projects to VTA (Ventral tegmental area)

1 claim from 1 source: 1 found, 0 tested and absent, 0 ambiguous. Evidence: retrograde tracer. Strongest reported: weak.

The claims behind it

clm-j89czseh6dpresentretrograde tracerstrength: weakproposed

About 4 to 6 double-labelled Nts neurons per section were found across roughly 2.5 mm of the PAG, including its lateral and ventrolateral parts. This gives a substantial total number but only a modest density, described as a minor projection.

DOI 10.1016/j.npep.2018.02.003 · PubMed 29478718 · PMC5906039, Results 3.7; Fig. 11D; Fig. 4; Table 2

Made by an AI model reading the paper (claude-opus-5-5, extract@0.3.0); a second AI model (claude-opus-5-5) agrees.