This project investigates the interaction between reward and cognition. There is evidence that the prefrontal cortex and basal ganglia work together to support reinforcement-based decision-making, and that psychoses may result from dysregulation of this circuitry. However, we know little about the physiological mechanisms through which brainstem reward systems might contribute to abstract thought. We plan to address this by recording activity in prefrontal cortex and striatum during a categorical decision-making task. The central question addressed by this proposal is """"""""How does knowledge about reward affect the representation of sensory evidence and decision criteria in the brain?"""""""" One process that contributes to flexible decision-making is stimulus categorization. Categorization affords a flexible linkage between sensory stimuli and motor responses. Categorization improves the efficiency of decision-making because responses that are appropriate for one member of a class often generalize to other stimuli in the same category. Categorization requires that attention be directed to critical stimulus features that identify stimuli as being in the same or different classes. Some categories are innate or overlearned. But in many cases category boundaries must shift """"""""on the fly"""""""" to adapt to changes in the environment. We will present preliminary evidence that a fronto-striatal network is involved in categorical decision-making. In this project, we will investigate how reinforcement modulates activity in this network during categorical decision-making and category learning. This work is highly relevant to many Psychiatric and Neurological disorders including Schizophrenia, Depression, Autism, Drug Addiction, Obsessive-Compulsive disorders, and Attention-deficit disorders (ADD and ADHD).
To function adaptively in the real world, animals and humans must constantly make choices that affect survival, reproduction, and the overall health and well-being of the organism. In this project, we will investigate how decision-outcomes modulate activity in fronto-striatal networks during categorical decision-making and category learning. This work is highly relevant to many Psychiatric and Neurological disorders including Schizophrenia, Depression, Autism, Drug Addiction, Obsessive-Compulsive disorders, and Attention-deficit disorders (ADD and ADHD).
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|Teichert, Tobias; Grinband, Jack; Ferrera, Vincent (2016) The importance of decision onset. J Neurophysiol 115:643-61|
|Ferrera, Vincent P (2015) Smooth pursuit preparation modulates neuronal responses in visual areas MT and MST. J Neurophysiol 114:638-49|
|McGovern, Robert A; Chan, Andrew K; Mikell, Charles B et al. (2015) Human substantia nigra neurons encode decision outcome and are modulated by categorization uncertainty in an auditory categorization task. Physiol Rep 3:|
|Yanike, Marianna; Ferrera, Vincent P (2014) Representation of outcome risk and action in the anterior caudate nucleus. J Neurosci 34:3279-90|
|Teichert, Tobias; Yu, Dian; Ferrera, Vincent P (2014) Performance monitoring in monkey frontal eye field. J Neurosci 34:1657-71|
|Yanike, Marianna; Ferrera, Vincent P (2014) Interpretive monitoring in the caudate nucleus. Elife 3:|
|Yu, Dian; Teichert, Tobias; Ferrera, Vincent P (2012) Orienting of attention to gaze direction cues in rhesus macaques: species-specificity, and effects of cue motion and reward predictiveness. Front Psychol 3:202|
|Tung, Yao-Sheng; Marquet, Fabrice; Teichert, Tobias et al. (2011) Feasibility of noninvasive cavitation-guided blood-brain barrier opening using focused ultrasound and microbubbles in nonhuman primates. Appl Phys Lett 98:163704|
|Marquet, Fabrice; Tung, Yao-Sheng; Teichert, Tobias et al. (2011) Noninvasive, transient and selective blood-brain barrier opening in non-human primates in vivo. PLoS One 6:e22598|
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