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. Author manuscript; available in PMC: 2019 Mar 28.
Published in final edited form as: Cell Rep. 2018 Aug 21;24(8):2051–2062.e2. doi: 10.1016/j.celrep.2018.07.076

Figure 4. Joint Population Decoding of Spatial and Phonetic Features.

Figure 4.

(A) Confusion patterns for classifying angles (top) and manners of articulation (bottom) from all electrodes (n = 201).

(B) Mean classification accuracy for varying numbers of electrodes for angle classification (top) and manner classification (bottom). Error bars denote standard deviation, and colors denote whether electrodes from single (red) or both (black) brain hemispheres were used for classification.

(C) Average of Z-scored electrode responses (far left) separated by hemisphere of the brain and the weights assigned to electrodes by spatial (left) and manner (right) classifiers. Angle classifier weights are sorted by the ASI of electrodes, and manner classifier weights are sorted by the BF of electrodes.

(D) Percentage increase in classification accuracy from a single to both brain hemispheres for manner and angle classification.

(E) Scatterplot of the maximum weight given to each electrode by manner and angle classifiers, colored by electrode location.

***p < 0.001. See also Figure S5.