From Cognition and Brain Plasticity Unit, Learning from Reward
will present the talk titled
Temporal Dynamics of Effort-Based Reward: Study Update
Abstract
The weighing of rewards and their effort requirements is critical for daily motivation and decision-making. Neuroimaging studies in humans suggest that the net value of rewards is encoded in a valuation network centered around the vmPFC1,2, however the temporal dynamics of effort-based reward processing remain relatively uninvestigated. Further, the few studies that have investigated the temporal dynamics of effort-based reward have largely relied on paradigms that confound effort demands with other reward-related costs (i.e. delay and probability) or focus primarily on outcome processing as opposed to the valuation of prospective effortful rewards3–5. Here, we present a new paradigm to identify the temporal dynamics (using scalp EEG) of rewards with cognitive effort costs. Initial behavioral findings will be presented and expected electrophysiological findings, as well as future directions, will be discussed.
1. Westbrook, A., Lamichhane, B. & Braver, T. The Subjective Value of Cognitive Effort is Encoded by a Domain-General Valuation Network. J. Neurosci. 39, 3934–3947 (2019).
2. Lopez-Gamundi, P. et al. The neural basis of effort valuation: A meta-analysis of functional magnetic resonance imaging studies. bioRxiv 2021.01.08.425909 (2021). doi:10.1101/2021.01.08.425909
3. Ma, Q., Meng, L., Wang, L. & Shen, Q. I endeavor to make it: Effort increases valuation of subsequent monetary reward. Behav. Brain Res. 261, 1–7 (2014).
4. Bowyer, C. et al. The effort-doors task: Examining the temporal dynamics of effort-based reward processing using ERPs. Neuroimage 228, 117656 (2021).
5. Wang, L., Zheng, J. & Meng, L. Effort provides its own reward: endeavors reinforce subjective expectation and evaluation of task performance. Exp. Brain Res. 235, 1107–1118 (2017).
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