Linking signal detection theory and encoding models to reveal independent neural representations from neuroimaging data
Fig 1
Stimulus representation and definition of perceptual separability in GRT.
The representation of a given identity changes randomly from trial to trial (dots at the bottom) according to some perceptual distribution (bell-shaped distributions at the top). Perceptual separability of identity from emotional expression (neutral vs. sad) holds if the perceptual distribution for identity does not change with emotional expression (left), and it fails if the perceptual distribution for identity does change with emotional expression (right).