Chatterjee, Anjan
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Publication Cosmetic Neurology: For Physicians the Future is Now(2004-08-01) Chatterjee, AnjanPublication Cosmetic Neurology and Cosmetic Surgery: Parallels, Predictions, and Challenges(2007-01-01) Chatterjee, AnjanAs our knowledge of the functional and pharmacological architecture of the nervous system increases, we are getting better at treating cognitive and affective disorders. Along with the ability to modify cognitive and affective systems in disease, we are also learning how to modify these systems in health. “Cosmetic neurology,” the practice of intervening to improve cognition and affect in healthy individuals, raises several ethical concerns.1 However, its advent seems inevitable.2 In this paper I examine this claim of inevitability by reviewing the evolution of another medical practice, cosmetic surgery. Cosmetic surgery also enhances healthy people and, despite many critics, it is practiced widely. Can we expect the same of cosmetic neurology? The claim of inevitability poses a challenge for both physicians and bioethicists. How will physicians reconsider their professional role? Will bioethicists influence the shape of cosmetic neurology? But first, how did cosmetic surgery become common?Publication Is it acceptable for people to take methylphenidate to enhance performance? No(2009-06-18) Chatterjee, AnjanA drug that can improve your exam results may sound tempting, and John Harris believes that we should embrace its possibilities. Anjan Chatterjee, however, argues that the dangers have been underplayedPublication Common and Unique Representations in pFC for Place Attractiveness(2015-05-01) Kable, Joseph W; Pegors, Teresa K; Chatterjee, Anjan; Epstein, Russell AAlthough previous neuroimaging research has identified overlapping correlates of subjective value across different reward types in the ventromedial pFC (vmPFC), it is not clear whether this “common currency” evaluative signal extends to the aesthetic domain. To examine this issue, we scanned human participants with fMRI while they made attractiveness judgments of faces and places—two stimulus categories that are associated with different underlying rewards, have very different visual properties, and are rarely compared with each other. We found overlapping signals for face and place attractiveness in the vmPFC, consistent with the idea that this region codes a signal for value that applies across disparate reward types and across both economic and aesthetic judgments. However, we also identified a subregion of vmPFC within which activity patterns for face and place attractiveness were distinguishable, suggesting that some category-specific attractiveness information is retained in this region. Finally, we observed two separate functional regions in lateral OFC: one region that exhibited a category-unique response to face attractiveness and another region that responded strongly to faces but was insensitive to their value. Our results suggest that vmPFC supports a common mechanism for reward evaluation while also retaining a degree of category-specific information, whereas lateral OFC may be involved in basic reward processing that is specific to only some stimulus categories.Publication "Cosmetic Neurology" and the problem of pain(2007-07-30) Chatterjee, AnjanFew people would argue against treating the traumatic psychological effects of war or violence. But what about taking a drug to lessen the pain of our common daily struggles, such as the end of a relationship or anxiety about one's job? Is this a "cosmetic" enhancement of human life, even a danger to character, or is it an ethical choice? For guidance, the author looks to the history of treating physical pain and argues that, despite growing knowledge of the biological basis for psychological pain, many find it hard to find a consistent principled position when it comes down to specific instances of alleviating human sufferingPublication The promise and predicament of cosmetic neurology(2006-02-01) Chatterjee, AnjanAdvances in cognitive neuroscience make cosmetic neurology in some form inevitable and will give rise to extremely difficult ethical issues.Publication The Neuropsychology of Visual Art(2015-09-01) Chatterjee, AnjanPublication Neural Substrates of Action Event Knowledge(2002-07-01) Kable, Joseph W; Chatterjee, Anjan; Lease-Spellmeyer, JessicaHuman concepts can be roughly divided into entities (prototypically referred to in language by nouns) and events (prototypically referred to in language by verbs). While much work in cognitive neuroscience has investigated how the brain represents different categories of entities, less attention has been given to the more basic distinction between entities and events. We used functional magnetic resonance imaging to examine brain activity while subjects performed a conceptual matching task that required them to access knowledge of objects and actions, using either pictures or words. Since action events involve movement through space, we hypothesized that accessing knowledge of actions would cause greater activation in brain regions involved in motion or spatial processing. In comparison to objects, accessing knowledge of actions through pictures was accompanied by increased activity bilaterally in the human MT/MST and nearby regions of the lateral temporal cortex. Accessing knowledge of actions through words activated areas just anterior and dorsal to area MT/MST on the left, within the posterior aspect of the middle and superior temporal gyri. We propose that the lateral occipital temporal cortex contains a mosaic of neural regions that processes different kinds of motion, ranging from the perception of objects moving in the world to the conception of movement implied in action verbs. The lateral occipital temporal cortex mediates the perceptual and conceptual features of action events, similar to the way that the ventral occipital temporal cortex processes the perceptual and conceptual features of entities.Publication Neuroaesthetics: A Coming of Age Story(2011-01-01) Chatterjee, AnjanNeuroaesthetics is gaining momentum. At this early juncture, it is worth taking stock of where the field is and what lies ahead. Here, I review writings that fall under the rubric of neuroaesthetics. These writings include discussions of the parallel organizational principles of the brain and the intent and practices of artists, the description of informative anecdotes, and the emergence of experimental neuroaesthetics. I then suggest a few areas within neuroaesthetics that might be pursued profitably. Finally, I raise some challenges for the field. These challenges are not unique to neuroaesthetics. As neuroaesthetics comes of age, it might take advantage of the lessons learned from more mature domains of inquiry within cognitive neuroscience.Publication Conceptual Representations of Action in the Lateral Temporal Cortex(2005-12-01) Kable, Joseph W; Thompson-Schill, Sharon L.; Kan, Irene P; Chatterjee, Anjan; Wilson, AshleyRetrieval of conceptual information from action pictures causes greater activation than from object pictures bilaterally in human motion areas (MT/MST) and nearby temporal regions. By contrast, retrieval of conceptual information from action words causes greater activation in left middle and superior temporal gyri, anterior and dorsal to the MT/MST. We performed two fMRI experiments to replicate and extend these findings regarding action words. In the first experiment, subjects performed conceptual judgments of action and object words under conditions that stressed visual semantic information. Under these conditions, action words again activated posterior temporal regions close to, but not identical with, the MT/MST. In the second experiment, we included conceptual judgments of manipulable object words in addition to judgments of action and animal words. Both action and manipulable object judgments caused greater activity than animal judgments in the posterior middle temporal gyrus. Both of these experiments support the hypothesis that middle temporal gyrus activation is related to accessing conceptual information about motion attributes, rather than alternative accounts on the basis of lexical or grammatical factors. Furthermore, these experiments provide additional support for the notion of a concrete to abstract gradient of motion representations with the lateral occipitotemporal cortex, extending anterior and dorsal from the MT/MST towards the peri-sylvian cortex.