Placebo and Nocebo Effects

Paradigms holding sensory input constant while manipulating expectations; provide the cleanest evidence for goal-state modulating valence

Neighborhood — ranked by edge-count

concept

Goal-Relative Prediction Error
grounds
The signed directional computation of how actual outcomes compare to goal-specified targets; identified with valence

cosine ≥ 0.65 · no typed edge

Entities in the same semantic neighborhood but without a typed relation to this one — candidates for new edges or unrecognized duplicates.

Placebo analgesia reduces activity in thalamus, insula, and ACC during pain while increasing prefrontal activity during anticipationfinding0.724
Neural evidence that placebo effects target evaluative rather than primary sensory circuits
Placebo Analgesia Paradigmmethod0.702
Experimental paradigm holding sensory input constant while manipulating expectations; provides key evidence
Nocebo hyperalgesia amplifies pain processing as far downstream as the spinal cordfinding0.681
Demonstrates top-down evaluative modulation reaches peripheral processing stages
What Is The Nature Of The Effects Thatquestion0.671