. 2021 Jul;212:104697. doi: 10.1016/j.cognition.2021.104697

Table 1.

Illustration of a p × p sized cue-to-outcome network with p cues and p outcomes, in which spectral components (sc) are used as cues (rows) and outcomes (columns). spectral components are grouped to k frequency bands (B), with m spectral components within each frequency band (m may vary by frequency band). Each u-th spectral component cue is associated with each v-th outcome by a weight w_{u, v}, representing their connection strength, where u = 1, 2, …, p and v = 1, 2, …, p. The table demonstrates the calculation of the j^th by-frequency band activation for a target and a competitor, where a hypothetical target stimulus has the spectral components sc_{1, 1}, sc_{1, 3} and sc_{2, 1}, and a hypothetical competitor stimulus has the spectral components sc_{1, 2}, sc_{2, 2}, sc_{2, 3}. Cells marked in dark blue represent the afferent weights between the target's cues and the target's outcomes. Cells marked in dark red represent the afferent weights between the competitor's cues and the target's outcomes. The bottom lines represent the by-frequency band activation vectors a for the target and the competitor, with activations a_j representing the summed weights between cues and outcomes, as calculated in Eq. 4.

		B₁			B₂				B_k
		sc_{1, 1}	sc_{1, 2}	sc_{1, 3}	sc_{2, 1}	sc_{2, 2}	sc_{2, 3}	...	sc_{k, m}
Target	sc_{1, 1}	w_{1, 1}	w_{1, 2}	w_{1, 3}	w_{1, 4}	w_{1, 5}	w_{1, 6}	...	w_{1, v}
Competitor	sc_{1, 2}	w_{2, 1}	w_{2, 2}	w_{2, 3}	w_{2, 4}	w_{2, 5}	w_{2, 6}	...	w_{2, v}
Target	sc_{1, 3}	w_{3, 1}	w_{3, 2}	w_{3, 3}	w_{3, 4}	w_{3, 5}	w_{3, 6}	...	w_{3, v}
Target	sc_{2, 1}	w_{4, 1}	w_{4, 2}	w_{4, 3}	w_{4, 4}	w_{4, 5}	w_{4, 6}	...	w_{4, v}
Competitor	sc_{2, 2}	w_{5, 1}	w_{5, 2}	w_{5, 3}	w_{5, 4}	w_{5, 5}	w_{5, 6}	...	w_{5, v}
Competitor	sc_{2, 3}	w_{6, 1}	w_{6, 2}	w_{6, 3}	w_{6, 4}	w_{6, 5}	w_{6, 6}	...	w_{6, v}
	...	...	...	...	...	...	...	...
	sc_{k, m}	w_{u, 1}	w_{u, 2}	w_{u, 3}	w_{u, 4}	w_{u, 5}	w_{u, 6}	...	w_{p, p}
Target activation		a₁			a₂			...	a_k
Competitor activation		a₁			a₂			...	a_k