Jessica MollickJessica Mollick is a current graduate student in the CCN Lab and joined the lab in 2011.
Contact info: Jessica.Mollick(at)colorado.edu
I'm interested in the brain mechanisms involved in learning, decision making, and executive function, and the role that neuromodulatory systems such as dopamine play in these tasks. My research involves models of the interactions between prefrontal cortex and subcortical areas like the basal ganglia and amygdala, and testing the predictions of these models empirically with methods such as fMRI. I am interested in the interactions between the brainstem, ventral striatum and cortical areas in the evaluation of appetitive and aversive stimuli, and the involvement of the dopamine system in aversive learning.
My work is on the PVLV computational neural network models of the basal ganglia, amygdala and dopamine system, with a particular focus on expanding those models to look at the role of dopamine and the basal ganglia in negative valence learning and understanding the brain mechanisms that drive prediction errors for worse than expected outcomes. We have applied these models to a variety of learning tasks, including conditioned inhibition, contextual renewal, extinction, blocking and unblocking. My empirical research focuses on fMRI, using conditioned inhibition experiment using juice rewards that draws on these worse than expected prediction errors, and am currently applying temporal-differences learning models as well as neural network models to this experiment, as well as a pain learning task, to assess the fit of these different models to fMRI data in dopaminergic and subcortical regions. I'm interested in the parameters of and interaction between reward and punishment learning, as well as model-based fMRI and comparing the fit of different models with empirical data.
- Goal-Driven Cognition in the Brain: A Computational Framework, RC O'Reilly, TE Hazy, J Mollick, P Mackie, S Herd (submitted)
- Mollick, J., Pauli, W.M, Krishnan, A., Chang, L.J., Reynolds, J., Wager, T. and Frank, G., O'Reilly, R.C., Conditioned inhibition (near submitted)
- Mollick, J., Brant, A., Friedman, N., O'Reilly, R.C., Working memory: Looking at gating and maintenance with the keep-track task (in prep)
- Hazy, T.E., Mollick, J., Nair, A, Krueger, K., O'Reilly, R.C., Neuro-computational Mechanisms of Acquired Dopamine Signaling (in prep)
- Mollick, J., Pauli, W.M., Chang, L.J, O'Reilly, R.C., Wager, T. (2017) The Neural Mechanisms of Worse than Expected Prediction Errors. The 3rd Multidisciplinary Conference on Reinforcement Learning and Decision Making. Abstract: File:MollickRLDM abstract.pdf Poster: File:RLDM poster.pdf
- Mollick, J., Brant, A., Friedman, N., O'Reilly, R.C. (2013) Working memory: Looking at gating and maintenance with the keep-track task Annual Meeting of Society for Neuroscience (SfN'13).
- Mollick, J., O'Reilly, R.C., Wager, T. and Frank, G. (2012). Conditioned inhibition and the learning of negative values. Annual Meeting of Society for Neuroscience (SfN'12).
- Mollick, J., Krishnan, A., Chang, L.J., Reynolds, J., Wager, T. and Frank, G., O'Reilly, R.C., (2013). Conditioned inhibition and the learning of negative values. Social and Affective Neuroscience 2013. File:ci poster san.pdf