PhD, Computation and Neural Systems, Caltech
BS, Brain and Cognitive Sciences, MIT
Colas JT, O’Doherty JP, & Grafton ST (2024) Active reinforcement learning versus action bias and hysteresis: control with a mixture of experts and nonexperts. PLOS Computational Biology 20(3): e1011950. https://doi.org/10.1371/journal.pcbi.1011950
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Dundon NM, Colas JT, Garrett N, Babenko V, Rizor E, Yang D, MacNamara M, Petzold L, & Grafton ST (2023) Decision heuristics in contexts integrating action selection and execution. Scientific Reports 13: 6486. https://doi.org/10.1038/s41598-023-33008-2
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Colas JT, Dundon NM, Gerraty RT, Saragosa-Harris NM, Szymula KP, Tanwisuth K, Tyszka JM, van Geen C, Ju H, Toga AW, Gold JI, Bassett DS, Hartley CA, Shohamy D, Grafton ST, & O’Doherty JP (2022) Reinforcement learning with associative or discriminative generalization across states and actions: fMRI at 3 T and 7 T. Human Brain Mapping 43(15): 4750-4790. https://doi.org/10.1002/hbm.25988
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Colas JT (2018) Value-based decision making and learning as algorithms computed by the nervous system. Doctoral dissertation, California Institute of Technology. https://doi.org/10.7907/z90r9mk8
Colas JT, Pauli WM, Larsen T, Tyszka JM, & O'Doherty JP (2017) Distinct prediction errors in mesostriatal circuits of the human brain mediate learning about the values of both states and actions: evidence from high-resolution fMRI. PLOS Computational Biology 13(10): e1005810. https://doi.org/10.1371/journal.pcbi.1005810
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Colas JT (2017) Value-based decision making via sequential sampling with hierarchical competition and attentional modulation. PLOS One 12(10): e0186822. https://doi.org/10.1371/journal.pone.0186822
Colas JT & Lu J (2017) Learning where to look for high value improves decision making asymmetrically. Frontiers in Psychology 8: 2000. https://doi.org/10.3389/fpsyg.2017.02000
Colas JT & Hsieh PJ (2014) Pre-existing brain states predict aesthetic judgments. Human Brain Mapping 35(7): 2924-2934. https://doi.org/10.1002/hbm.22374
Hsieh PJ & Colas JT (2012) Awareness is necessary for extracting patterns in working memory but not for directing spatial attention. Journal of Experimental Psychology: Human Perception and Performance 38(5): 1085-1090. https://doi.org/10.1037/a0028345
Hsieh PJ, Colas JT, & Kanwisher N (2012) Spatial pattern of BOLD fMRI activation reveals cross-modal information in auditory cortex. Journal of Neurophysiology 107(12): 3428-3432. https://doi.org/10.1152/jn.01094.2010
Hsieh PJ & Colas JT (2012) Perceptual fading without retinal adaptation. Journal of Experimental Psychology: Human Perception and Performance 38(2): 267-271. https://doi.org/10.1037/a0026963
Hsieh PJ, Colas JT, & Kanwisher N (2012) Pre-stimulus pattern of activity in the fusiform face area predicts face percepts during binocular rivalry. Neuropsychologia 50(4): 522-529. https://doi.org/10.1016/j.neuropsychologia.2011.09.019
Dechter E, Colas JT, Hsieh PJ, & Vul E (2011) Top-down inferences affect visual sensitivity in a signal detection task. Journal of Vision 11(11): 987. https://doi.org/10.1167/11.11.987
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Hsieh PJ, Colas JT, & Kanwisher N (2011) Pop-out without awareness: unseen feature singletons capture attention only when top-down attention is available. Psychological Science 22(9): 1220-1226. https://doi.org/10.1177/0956797611419302
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