Figure 1
From: Unraveling dynamics of human physical activity patterns in chronic pain conditions
Representation of information embedded in PA pattern as periods and events.
(a) pattern of dichotomous PA states from which PA periods are defined as: activity, 
, rest, 
and activity-rest succession (pattern ‘ar’), 
; (b) pattern of differences between successive periods of activity and rest from which PA periods are defined as: amount of excess rest following the previous activity, 
and amount of deficit in rest following the previous activity, 
; (c) pattern of a → r and r → a transitions represented as event series and event counts, N(T) = {Nk(T)}, k = 1,M, where N(T) denotes the counting function of the pooled process which assembles and orders the occurrence time of a → r and r → a transitions; (d) conditional intensity functions 
and 
(inverted to aid visualization), who model the dependencies between the timings of a → r and r → a transitions. Note that this illustrative example is extracted from the PA pattern of one subject.
