Jürgen Dittmann
University of Freiburg
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Jürgen Dittmann.
Cognition | 1987
Gerhard Blanken; Jürgen Dittmann; J.-Christian Haas; Claus-W. Wallesch
Abstract We analyzed spontaneous speech production in semi-standardized interviews conducted with 10 patients suffering from moderate senile dementia of the Alzheimer type (SDAT), 5 Wernickes aphasics, and 5 elderly controls without brain damage. Data analysis revealed in both patient groups a reduction of sentence length but absence of systematic paragrammatic symptoms on the part of the demented patients. A relatively selectively diminished use of nouns was striking in the production of both patient groups, whereas word finding ability was surprisingly well preserved in the SDAT patients. Both patient groups exhibited marked deficits but different patterns of pathological behaviour on the discourse level of responding to the interviewers questions. Results are interpreted within a proposed neurolinguistic language production model. It is argued that the formulation process may be preserved in demented patients but is disturbed in aphasia. Language-related disturbances in senile dementia are assumed to result from pre-linguistic disorders in the formation of the conceptual structure of the intended speech act.
Aphasiology | 1988
Gerhard Blanken; Jürgen Dittmann; J.-Christian Haas; Claus-W. Wallesch
Abstract Nine expressively severely impaired aphasics with a predominant production of syllabic speech automatisms (e.g. do-do-do) were investigated. Firstly, the group respected differential length types in relation to three types of questions (yes/no, wh-questions and narrative requests) in a standardized interview. Secondly, preserved articulatory and phonological capacities in series and syntagmatic cueing conditions were found in a subgroup. Finally, observations in written language suggest that automatisms are restricted to oral speech. Results are discussed within the framework of a language production model.
Cognitive Neuropsychology | 1989
Gerhard Blanken; Ernst G. de Langen; Jürgen Dittmann; Claus W. Wallesch
Abstract A patient is described whose oral speech consists exclusively of repetitively used stereotypical utterances (speech automatisms) but whose written performance is far better preserved. Written language investigation revealed that his phonological route for writing was not totally blocked. In writing to dictation, word length and syllabic structure were largely respected, even for nonwords. Picture-matching tasks which manipulated phonological similarity demonstrated relatively preserved access to lexical phonology. A nonlexical and sub-phonemic hypothesis of automatism-generation is proposed.
Archive | 2008
Gerhard Blanken; Jürgen Dittmann; Hannelore Grimm; Claus-W. Wallesch
Archive | 1993
Gerhard Blanken; Jürgen Dittmann; Hannelore Grimm; GrimmJohn C. Marshall; Claus-W. Wallesch
Neuroscience Letters | 2002
Gerhard Blanken; Jürgen Dittmann; Claus-W. Wallesch
Archive | 1993
Gerhard Blanken; Jürgen Dittmann; Hannelore Grimm; GrimmJohn C. Marshall; Claus-W. Wallesch
Archive | 1993
Gerhard Blanken; Jürgen Dittmann; Hannelore Grimm; GrimmJohn C. Marshall; Claus-W. Wallesch
Aphasiology | 1998
Kerstin Köhler; Claudius Bartels; Manfred Herrmann; Jürgen Dittmann; Claus-W. Wallesch
Archive | 1993
Gerhard Blanken; Jürgen Dittmann; Hannelore Grimm; GrimmJohn C. Marshall; Claus-W. Wallesch