@article{PatilHanneBurchertetal.2016,
  author    = {Patil, Umesh and Hanne, Sandra and Burchert, Frank and De Bleser, Ria and Vasishth, Shravan},
  title     = {A Computational Evaluation of Sentence Processing Deficits in Aphasia},
  series = {Cognitive science : a multidisciplinary journal of anthropology, artificial intelligence, education, linguistics, neuroscience, philosophy, psychology ; journal of the Cognitive Science Society},
  volume    = {40},
  journal   = {Cognitive science : a multidisciplinary journal of anthropology, artificial intelligence, education, linguistics, neuroscience, philosophy, psychology ; journal of the Cognitive Science Society},
  publisher = {Wiley-Blackwell},
  address   = {Hoboken},
  issn      = {0364-0213},
  doi       = {10.1111/cogs.12250},
  pages     = {5 -- 50},
  year      = {2016},
  abstract  = {Individuals with agrammatic Broca's aphasia experience difficulty when processing reversible non-canonical sentences. Different accounts have been proposed to explain this phenomenon. The Trace Deletion account (Grodzinsky, 1995, 2000, 2006) attributes this deficit to an impairment in syntactic representations, whereas others (e.g., Caplan, Waters, Dede, Michaud, \& Reddy, 2007; Haarmann, Just, \& Carpenter, 1997) propose that the underlying structural representations are unimpaired, but sentence comprehension is affected by processing deficits, such as slow lexical activation, reduction in memory resources, slowed processing and/or intermittent deficiency, among others. We test the claims of two processing accounts, slowed processing and intermittent deficiency, and two versions of the Trace Deletion Hypothesis (TDH), in a computational framework for sentence processing (Lewis \& Vasishth, 2005) implemented in ACT-R (Anderson, Byrne, Douglass, Lebiere, \& Qin, 2004). The assumption of slowed processing is operationalized as slow procedural memory, so that each processing action is performed slower than normal, and intermittent deficiency as extra noise in the procedural memory, so that the parsing steps are more noisy than normal. We operationalize the TDH as an absence of trace information in the parse tree. To test the predictions of the models implementing these theories, we use the data from a German sentence—picture matching study reported in Hanne, Sekerina, Vasishth, Burchert, and De Bleser (2011). The data consist of offline (sentence-picture matching accuracies and response times) and online (eye fixation proportions) measures. From among the models considered, the model assuming that both slowed processing and intermittent deficiency are present emerges as the best model of sentence processing difficulty in aphasia. The modeling of individual differences suggests that, if we assume that patients have both slowed processing and intermittent deficiency, they have them in differing degrees.},
  language  = {en}
}
@article{WartenburgerHeekerenBurchertetal.2004,
  author    = {Wartenburger, Isabell and Heekeren, Hauke R. and Burchert, Frank and Heinemann, Steffi and De Bleser, Ria and Villringer, Arno},
  title     = {Neural correlates of syntactic transformations},
  issn      = {1065-9471},
  year      = {2004},
  abstract  = {Many agrammatic aphasics have a specific syntactic comprehension deficit involving processing syntactic transformations. It has been proposed that this deficit is due to a dysfunction of Broca's area, an area that is thought to be critical for comprehension of complex transformed sentences. The goal of this study was to investigate the role of Broca's area in processing canonical and non-canonical sentences in healthy subjects. The sentences were presented auditorily and were controlled for task difficulty. Subjects were asked to judge the grammaticality of the sentences while their brain activity was monitored using event-related functional magnetic resonance imaging. Processing both kinds of sentences resulted in activation of language-related brain regions. Comparison of non-canonical and canonical sentences showed greater activation in bilateral temporal regions; a greater activation of Broca's area in processing antecedent-gap relations was not found. Moreover, the posterior part of Broca's area was conjointly activated by both sentence conditions. Broca's area is thus involved in general syntactic processing as required by grammaticality judgments and does not seem to have a specific role in processing syntactic transformations. (C) 2004 Wiley-Liss, Inc},
  language  = {en}
}
@article{WartenburgerBurchertHeekerenetal.2003,
  author    = {Wartenburger, Isabell and Burchert, Frank and Heekeren, Hauke R. and De Bleser, Ria and Villringer, Arno},
  title     = {Grammaticality judgments on sentences with and without movement of phrasal constituents : an event-related fMRI study},
  issn      = {0911-6044},
  year      = {2003},
  language  = {en}
}
@article{MaruschvonderMalsburgBastiaanseetal.2013,
  author    = {Marusch, Tina and von der Malsburg, Titus Raban and Bastiaanse, Roelien and Burchert, Frank},
  title     = {Tempusmorphologie bei deutschen Agrammatikern},
  series = {Spektrum Patholinguistik},
  journal   = {Spektrum Patholinguistik},
  number    = {6},
  editor    = {Fritzsche, Tom and Meyer, Corinna B. and Adelt, Anne and Roß, Jennifer},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  issn      = {1866-9085},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-68595},
  pages     = {219 -- 223},
  year      = {2013},
  abstract  = {1 Einleitung 2 Ziele der Studie und Vorhersagen 3 Methodologie 4 Ergebnisse 5 Ausblick 6 Literatur},
  language  = {de}
}