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Patrick J. Ledden
Researcher at Harvard University
Publications - 24
Citations - 4949
Patrick J. Ledden is an academic researcher from Harvard University. The author has contributed to research in topics: Auditory cortex & Functional magnetic resonance imaging. The author has an hindex of 17, co-authored 24 publications receiving 4770 citations.
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Journal ArticleDOI
Object-related activity revealed by functional magnetic resonance imaging in human occipital cortex.
Rafael Malach,J.B. Reppas,Randall R. Benson,Kenneth K. Kwong,H. Jiang,W.A. Kennedy,Patrick J. Ledden,Thomas J. Brady,Bruce R. Rosen,Roger B. H. Tootell +9 more
TL;DR: The lateral occipital complex (LO) showed preferential activation to images of objects, compared to a wide range of texture patterns as mentioned in this paper, suggesting that objects varying widely in their recognizability (e.g., famous faces, common objects, and unfamiliar three-dimensional abstract sculptures) activated it to a similar degree.
Journal ArticleDOI
Functional Analysis of V3A and Related Areas in Human Visual Cortex
Roger B. H. Tootell,Janine D. Mendola,Nouchine Hadjikhani,Patrick J. Ledden,Arthur K. Liu,J.B. Reppas,Martin I. Sereno,Anders M. Dale +7 more
TL;DR: Using functional magnetic resonance imaging (fMRI) and cortical unfolding techniques, the retinotopy, motion sensitivity, and functional organization of human area V3A was analyzed and the situation is qualitatively reversed: V3 is reported to be prominently motion-selective, whereas V 3A is less so.
Journal ArticleDOI
Improved auditory cortex imaging using clustered volume acquisitions.
TL;DR: Observations of more consistent spatial extent of responses, greater mean signal changes, and higher and more consistent values of mean t‐statistic per unit imaging time demonstrate the efficacy of using a clustered volume acquisition for fMRI of auditory cortex.
Journal ArticleDOI
Tonotopic organization in human auditory cortex revealed by progressions of frequency sensitivity.
Thomas M. Talavage,Martin I. Sereno,Jennifer R. Melcher,Patrick J. Ledden,Bruce R. Rosen,Anders M. Dale +5 more
TL;DR: This functional magnetic resonance imaging study used frequency-swept stimuli to identify progressions of frequency sensitivity across the cortical surface, suggesting that five areas in human auditory cortex exhibit at least six tonotopic organizations.