File:Miller2012 fig5.jpg

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Image title	The ?coupling vector? and trial-by-trial characterization of modulation.(A) The selected precentral motor cortex electrode (green, Subject 3). (B) The phase-coupling palette for this site identifying range of low-? band frequencies (12?20 Hz). (C) Mean amplitude (+/?3SEM) of broadband power as function of the Hilbert phase (?) of the band-passed 12?20 Hz signal. (D) The complex ?coupling vector? reflects the magnitude, Zmod, and phase, ?c, of the peak modulation of broadband activity with the rhythm in the complex plane. (E) Epochs of finger movement and rest (upper traces) with simultaneous broadband power (pink) and ? motor rhythm (gold). Green shows index finger position, and gray shows the other fingers. (F) Segments of the data traces corresponding to periods of rest (dark gray), thumb movement (green), and other finger movements (light gray). (G) From each behavioral epoch, a single trial coupling vector can be obtained. (H) Distribution of coupling vectors across all movement epochs. (I) Calculation of the mean coupling vector for the rest condition (). The distribution of coupling values for this behavior is obtained by projecting individual coupling vectors onto the mean complex coupling vector direction (dark pink line). The distribution of these projected values (upper right histogram) gives the error bar indicating 3SEM for Zmod. The corresponding vectors from epochs in G are circled. (J) As in (I), for thumb movement epochs. (K) Distribution of rhythm amplitudes (envelope of motor rhythm amplitude in E) during epochs of movement and rest. T?=?Thumb movement epochs, I?=?Index finger, M?=?middle finger, L?=?little finger, R?=?rest. (L) Coupling vector amplitudes (projected as in H and I) for different behavioral types. (M) Z-score of log broadband values.
Publisher	Public Library of Science
Short title	Figure 5
Copyright holder	Creative Commons Attribution License
Source	info:doi/10.1371/journal.pcbi.1002655
Date(s)	6 September 2012
Identifier	info:doi/info:doi/10.1371/journal.pcbi.1002655.g005
IIM version	2