The HaxbyLab@Dartmouth

Samuel A. Nastase

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Samuel A. Nastase

PhD student

2012-2017:
PhD in Cognitive Neuroscience, Dartmouth College, USA (Advisor: James V. Haxby)
2010-2012:
MSc in Cognitive Neuroscience, University of Trento, Italy (Advisor: Uri Hasson)
2006-2010:
BA in Cognitive Science and Philosophy, Johns Hopkins University, USA (Advisor: Michael McCloskey)

Contact

Address:6207 Moore Hall, Hanover, NH 03755
Email:sam.nastase@gmail.com

Research interests

My current research focuses on how cognitive processes such as attention and memory operate on distributed neural representations. Particularly, I’m interested in how attentional allocation, as a filtering mechanism, can transiently warp neural representation. My broader interests include vision, attention, neuromorphic computational models, and information theoretic accounts of sensory processing.

Publications

Articles

[NID+15]Nastase, S. A. , Iacovella, V., Davis, B. and Hasson, U. (2015). Connectivity in the human brain dissociates entropy and complexity of auditory input. NeuroImage, 108, 292-300. [PDF] DOI: 10.1016/j.neuroimage.2014.12.048
[NIH+14]Nastase, S. A. , Iacovella, V. and Hasson, U. (2014). Uncertainty in visual and auditory series is coded by modality-general and modality-specific neural systems. Human Brain Mapping, 35, 1111-28. [PDF] DOI: 10.1002/hbm.22238

Miscellaneous

Posters

[NOH+OHBM15]Nastase, S. , di~Oleggio Castello, M. V., Haxby, J. V. , Gobbini, M. I. and Halchenko, Y. O. (2015). Clustering cortical searchlights based on shared representational geometry. Organization of Human Brain Mapping Annual Meeting, Honolulu HI, USA. Poster.

Posters and presentations

Nastase, S. A., Visconti di Oleggio Castello, M., Haxby, J. V., Gobbini, M. I., Halchenko, Y. O. (2015, June). Clustering cortical searchlights based on shared representational geometry. Oral presentation at the annual meeting of the Organization for Human Brain Mapping, Honolulu, Hawaii. [PDF]

Nastase, S. A. (2015, June). Multivariate pattern analysis for neuroscience. Invited lecture at the Dartmouth-Hitchcock Medical Center, Lebanon, NH.

Nastase, S. A., Connolly, A. C., Oosterhof, N. N., Halchenko, Y. O., Gors, J., Gobbini, M. I., Haxby, J. V. (2014, August). Attention reshapes distributed population codes for animal and action representation. Poster presented at the Center for Cognitive Neuroscience Workshop on Decoding Population Responses, Dartmouth College, Hanover, NH.

Nastase, S. A., Connolly, A. C., Oosterhof, N. N., Halchenko, Y. O., Gors, J., Gobbini, M. I., Haxby, J. V. (2014, June). Attention locally modulates the discriminability of high-level, task-relevant representations. Poster presented at the annual meeting of the Organization for Human Brain Mapping, Hamburg, Germany. [PDF]

Nastase, S. A., Connolly, A. C., Oosterhof, N. N., Halchenko, Y. O., Gors, J., Gobbini, M. I., Haxby, J. V. (2014, May). Attentional allocation locally warps representational space. Poster presented at the annual meeting of the Vision Sciences Society, St. Pete Beach, FL. [PDF] DOI: 10.1167/14.10.626

Nastase, S. A. (2014, April). Design considerations for fMRI studies using multivariate pattern analysis. Presentation at the fMRI Brown Bag symposium series at Dartmouth College, Hanover, NH.

Nastase, S. A. (2014, April). Task-dependent warping in high-dimensional neural representational space. Presentation at the Social Brain Sciences symposium series, Dartmouth College, Hanover, NH.

Nastase, S. A., Iacovella, V., & Hasson, U. (2012, April). Statistical constraints in the auditory domain impact whole-brain connectivity patterns of the anterior cingulate and hippocampus. Poster presented at the annual meeting of the Cognitive Neuroscience Society, Chicago, IL. [PDF]

Nastase, S. A., Iacovella, V., & Hasson, U. (2012, February). Do structured inputs result in structured activity? The impact of temporal structure in the auditory domain on functional connectivity patterns. Poster presented at the first international workshop on Segregation and Integration in Music and Language, Teubingen, Germany. [PDF]

Nastase, S. A., Iacovella, V., & Hasson, U. (2011, April). Modality-general and modality-specific systems coding for input order. Poster presented at the annual meeting of the Cognitive Neuroscience Society, San Francisco, CA. [PDF]

Nastase, S. A., Iacovella, V., & Hasson, U. (2010, November). Does the coding of order depend on language systems? Poster presented at the annual Neurobiology of Language Conference, San Diego, CA. [PDF]

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