Jonathan Nicholas

Flexible decisions arise from resource-rational memory sampling

This study shows that flexible decisions are made by sampling memories in a resource-rational way, using gaze patterns and a neural network model.

The Periaqueductal Gray Selectively Supports Reversal Learning During a Flexible Discrimination Task in Mice

The paper uses fMRI in mice to show that the periaqueductal gray (PAG) supports reversal learning during a flexible discrimination task by updating value representations.

Episodic memory facilitates flexible decision making via access to detailed events

The paper shows that episodic memory helps people make better decisions when future needs are uncertain by recalling detailed past events.

Proactive and reactive construction of memory-based preferences

The paper shows that the brain uses proactive and reactive memory strategies for decision-making, with proactive being more efficient but reactive used when options have more memory associations.

Two routes to value-based decisions in Parkinsons disease: differentiating incremental reinforcement learning from episodic memory

This study investigates reward-based learning deficits in Parkinson's disease, finding impaired incremental learning but intact episodic memory, with medication improving the deficit.

The role of the cerebellum in learning to predict reward: evidence from cerebellar ataxia

This study investigates reward learning in individuals with cerebellar ataxia, finding impaired trial-and-error reward learning but preserved episodic memory-based reward prediction.

Uncertainty alters the balance between incremental learning and episodic memory

The paper investigates how uncertainty affects the balance between incremental learning and episodic memory in decision-making, finding that people rely more on episodic memory when incremental learning is uncertain.