Events

Approach-avoidance (AA) conflict resolution is a form of decision making that is fundamentally important for survival and requires the effective evaluation of affective stimuli or events with mixed outcomes (positive and negative). Despite the prevailing view of hippocampal involvement in learning and memory processes, the hippocampus is also thought to be involved in the resolution […]

To make adaptive decisions we must cast ourselves into the future and consider the outcomes of our potential choices. This prospective consideration is informed by our memories. I will discuss our lab’s recent work investigating the neural circuits responsible for encoding, updating, and retrieving reward memories for use in the considerations underlying decision making. We […]

Speaking is a unique and defining human behavior.  Over the past decade, we have focused on deciphering the basic neural code that underlies our ability to speak fluently. During speech production, vocal tract movement gestures for all speech sounds are encoded by highly specialized neural activity, organized as a map, in the human speech motor […]

Mild traumatic brain injury (mTBI) is the most common type of traumatic brain injury globally. Although its consequences may be short term, mTBI often leads to long-term neuropsychiatric and neurological impairments and has been estimated to increase the probability of later life dementia up to six-fold. It is presently not clear what neuropathological changes underlie […]

In 1973 John Heuser and Tom Reese demonstrated that neurotransmitter was released from neurons via the fusion of neurotransmitter-filled vesicles with the cell membrane.  But at the same time, these experiments launched a controversy that is unresolved today – do vesicles collapse into the membrane and are then recycled slowly on the order of 20 […]

Dopamine is a neuromodulator that codes information on various time scales. I will discuss recent progress on the identification of fast release mechanisms for dopamine in the mouse striatum. I will present data on triggering mechanisms of dopamine release and evaluate its roles in striatal regulation. In the long-term, our work will allow for a better understanding of the mechanisms and […]