Per Östberg

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We describe a case of frontotemporal lobar degeneration with semantic dementia and lower motor neuron disease. A 63-year-old man presented with the full clinical picture of semantic dementia, including semantic anomia, surface alexia, lexical agraphia, associative agnosia, prosopagnosia and phonagnosia. Flaccid dysarthria, bulbar dysphagia and(More)
BACKGROUND AND PURPOSE Frontostriatal circuit mediated cognitive dysfunction has been implicated in frontotemporal lobar degeneration (FTLD), but not Alzheimer's disease, or healthy aging. We measured the neostriatum (caudate nucleus and putamen) volume in FTLD (n=34), in comparison with controls (n=27) and Alzheimer's disease (AD, n=19) subjects. METHODS(More)
A group of 172 mild cognitive impairment (MCI) patients and 79 healthy control participants (HC) were tested on simple reaction time (SRT). There was a significant difference between MCI and HC in mean SRT. The test could be partitioned into five segments of 16 trials each, but RT's were not always available for each partition. However, scores from each(More)
Regions affected late in neurodegenerative disease are thought to be anatomically connected to regions affected earlier. The subcallosal medial prefrontal cortex (SMPC) has connections with the dorsolateral prefrontal cortex (DLPFC), orbitofrontal cortex (OFC), and hippocampus (HC), which are regions that may become atrophic in frontotemporal lobar(More)
1 We thank Zexi Wang for research assistance. We are also grateful for comments from seminar participants at the Abstract We argue that there is a connection between the interbank market for liquidity and the broader financial markets, which has its basis in demand for liquidity by banks. Tightness in the interbank market for liquidity leads banks to engage(More)
The aim of this study was to present adult norms and to estimate the test-retest reliability for durational and response accuracy measures on the word sequence production test, Months Backward. A total of 216 neurologically intact adults (aged 18-88) stratified by sex, age, and education took the test at maximum speed. Errors and speech duration were(More)
OBJECTIVES Darier disease is an autosomal dominant skin disorder caused by mutations in the ATPase, Ca++ transporting, cardiac muscle, slow twitch 2 (ATP2A2) gene and previously reported to cosegregate with bipolar disorder and schizophrenia in occasional pedigrees. It is, however, unknown whether these associations exist also in the general population, and(More)
Studies suggest associations between childhood autistic traits and adolescent psychotic experiences. However, recent research suggests that a general neuropsychiatric problems factor predicts adverse outcomes better than specific diagnostic entities. To examine if the alleged association between autistic traits and psychotic experiences could rather be(More)
Few comprehensive spelling tests are available in Swedish, and none have been validated in adults with reading and writing disorders. The recently developed STAVUX test includes word and pseudoword spelling subtests with high internal consistency and adult norms stratified by education. This study evaluated the convergent and diagnostic validity of STAVUX(More)
A company's credit spreads and default policy are analyzed in a structural model of credit risk. Agents have incomplete information about the company's EBIT (Earnings Before Interest and Taxes) process and observe it with time delays. When all agents observe the state variable with the same delay, the delay has a minor effect on credit spreads and default(More)