Fig. 1: Demand characteristics in sample curves.
From: Enduring disruption of reward and stress circuit activities by early-life adversity in male rats
Schematic representation of sample demand curves generated from hypothetical response patterns reflecting differences in hedonic setpoint (Q0) and demand elasticity (α). Drug intake was determined at each response requirement and consumption data were modeled with an exponential demand equation: \({{{\mathrm{lnQ}}}} = {{{\mathrm{ln}}}}Q_0 + k(e^{ - \propto Q_0C} - 1)\) [44, 60], where Q = consumption, C = unit cost, k is a scalar constant for consumption range, α = demand elasticity, and Q0 = extrapolated intake at zero effort. This process yields a demand curve fitted to consumption at each price, from which variables corresponding to the hedonic setpoint (Q0) and motivation (α) are derived.
