A
Alexander Walther
Researcher at Cognition and Brain Sciences Unit
Publications - 11
Citations - 1429
Alexander Walther is an academic researcher from Cognition and Brain Sciences Unit. The author has contributed to research in topics: Cognitive neuroscience of visual object recognition & Distance matrix. The author has an hindex of 8, co-authored 11 publications receiving 1135 citations. Previous affiliations of Alexander Walther include University College London.
Papers
More filters
Journal ArticleDOI
A toolbox for representational similarity analysis.
Hamed Nili,Cai Wingfield,Alexander Walther,Li Su,William D. Marslen-Wilson,Nikolaus Kriegeskorte +5 more
TL;DR: A Matlab toolbox for representational similarity analysis is introduced, designed to help integrate a wide range of computational models into the analysis of multichannel brain-activity measurements as provided by modern functional imaging and neuronal recording techniques.
Journal ArticleDOI
Reliability of dissimilarity measures for multi-voxel pattern analysis.
Alexander Walther,Alexander Walther,Hamed Nili,Naveed Ejaz,Arjen Alink,Nikolaus Kriegeskorte,Jörn Diedrichsen +6 more
TL;DR: In this paper, the authors compare the reliability of three classes of dissimilarity measures: classification accuracy, Euclidean/Mahalanobis distance, and Pearson correlation distance, using simulations and four real functional magnetic resonance imaging (fMRI) datasets.
Journal ArticleDOI
fMRI orientation decoding in V1 does not require global maps or globally coherent orientation stimuli
TL;DR: This study investigates whether fMRI orientation decoding with 2-mm voxels requires globally coherent orientation stimuli and/or global-scale patterns of V1 activity and finds that fine-grained components of the fMRI patterns reflect visual orientations.
Journal ArticleDOI
An emerging consensus for open evaluation: 18 visions for the future of scientific publishing
TL;DR: The Research Topic “Beyond open access: visions for open evaluation of scientific papers by post-publication peer review” in Frontiers in Computational Neuroscience is edited, which includes 18 papers, each going beyond mere criticism of the status quo and laying out a detailed vision for the ideal future system.
Posted ContentDOI
Mind the drift - improving sensitivity to fMRI pattern information by accounting for temporal pattern drift
Arjen Alink,Alexander Walther,Alexandra Krugliak,Jasper J. F. van den Bosch,Nikolaus Kriegeskorte +4 more
TL;DR: It is shown that fMRI pattern similarity estimates are severely affected by temporal pattern drifts in fMRI data – even after voxel-wise detrending, and recommended that future fMRI studies take pattern drift into account when analyzing pattern similarity.