This study examined everyday action impairment in participants with Parkinson's disease dementia (PDD) by comparison with participants with Parkinson's disease-no dementia (PD) or Alzheimer's disease (AD) and in reference to a neuropsychological model. Participants with PDD (n = 20), PD (n = 20), or AD (n = 20) were administered performance-based measures of everyday functioning that allowed fo...

Abstract This work deals with emphasizing the relation between particle dimension distribution of nanocellulose (PDD) particles its efficiency as stabilizing/adsorbent agent Indigo dye. In this respect, different pulping reagents were used in preparation Rice straw pulps precursors for nanocelluloses using acid hydrolysis and oxidizing agents [(KMnO 4 NH ) 2 S O 8 ] methods. The PDD was estimat...

A 5-month-old female Citron-crested Cockatoo (Cacatua sulphurea citrinocristata) that was born and hand-reared in Japan died with suspected proventricular dilatation disease (PDD). Macroscopic and microscopic examinations of the bird revealed characteristic features of PDD, i.e., distention of the proventriculus and infiltration of lymphocytes and plasma cells in ganglia of various organs and i...

The performance of two screening instruments for pervasive developmental disorders was studied in the total population of children and adolescents with mental retardation between 4 and 18 years (N=1059) in Friesland, a northern province of the Netherlands. Parents completed the ABC, staff completed the PDD-MRS. The screening instruments were related to the ADI-R and ADOS for 184 participants. T...

Previous studies indicate that Multiple Complex Developmental Disorder (MCDD) children differ from PDD-NOS and autistic children on a symptom level and on psychophysiological functioning. Children with MCDD (n = 21) and PDD-NOS (n = 62) were compared on two facets of social-cognitive functioning: identification of neutral faces and facial expressions. Few significant group differences emerged. ...

AIMS Using fMRI, we evaluated the default mode network (DMN) and the extrastriate visual resting state network (ESV-RSN) in 14 patients with Parkinson's disease dementia (PDD) as compared with 18 patients with Parkinson's disease (PD) without dementia and 18 healthy controls (HC). METHODS We analyzed the seed-based functional connectivity of both resting state data and deactivations during a ...

The previous chapter looked at the communication characteristics of PDD and attempted to understand these in terms of language processing. It was proposed that in order to understand better the communication difficulties in this population the cognitive processing of this population also needs to be looked at. The current chapter focuses on what is known about cognitive processing in PDD and co...

Enhanced visual detail processing in subjects with pervasive developmental disorder (PDD) has been related to impairments in feature integration. The functional integrity of two types of neuronal connections involved in visual feature integration, namely horizontal and feedbackward connections, were tested. Sixteen children with PDD and 17 age- and IQ-matched control children (mean age 13.3 yea...

Dementia with Lewy bodies (DLB) is characterized by progressive dementia with two of three core symptoms; Parkinsonism, visual hallucinations or disturbances of consciousness/fluctuating attention. Dementia in Parkinson's disease (PDD) has similar neuropsychiatric characteristics. Reduced nigrothalamic dopamine and altered thalamic D2 receptors may mediate some of the non-motor symptoms of DLB ...

The prevalence of Parkinson's disease (PD) increases with age. Up to 50% of PD show cognitive decline in terms of a mild cognitive impairment already in early stages that predict the development of dementia, which can occur in up to 80% of PD patients over the long term, called Parkinson's disease dementia (PDD). So far, diagnosis of PD/PDD is made according to clinical and neuropsychological e...