The default unified model parameters from: Ramakrishnan, S., Wesensten, N. J., Balkin, T. J., \& Reifman, J. (2016). A Unified Model of Performance: Validation of its Predictions across Different Sleep/Wake Schedules. Sleep, 39(1), 249--262. https://doi.org/10.5665/sleep.5358

unified_make_pvec(
  U0 = 24.12,
  L0 = 0,
  S0 = 0,
  phi = 2.02,
  kappa = 4.13,
  tau_s = 1,
  tau_w = 40,
  tau_la = 4.06 * 24,
  sigma = 1,
  wc = 1.14,
  wd = -0.46
)

Arguments

U0

Upper asymptote (defaults to = 24.12)

L0

Lower asymptote(defaults to = 0, # (0.88 * 3 - 2)*1.74)

S0

Initial starting point of S process (defaults to = 0, # 1.11 + (1.74-1.11)*0.64)

phi

Phase at beginning of the simulation (defaults to = 2.02)

kappa

Relative influence of C process (defaults to = 4.13)

tau_s

Controls rate of decay in S during sleep (defaults to = 1)

tau_w

Controls rate of rise in S during wake (defaults to = 40)

tau_la

Rate of change in lower asymptote (defaults to = 4.06*24) I don't think we have any particular reason to claim sigma is Bayesian error.

sigma

Bayesian error - ignore unless you have error calculations (defaults to = 1)

wc

Sleep inertia: extent of alertness reduction at time of waking (typically = -5.72) (defaults to = 1.14)

wd

Sleep inertia: exponential recovery of alertness (typically = -1.51) (defaults to = -0.4)