Semantic knowledge of social norms in frontotemporal dementia patients with either predominant frontal or temporal lobe atrophy.

Objective: Little is known about the relative contribution of frontal and anterior temporal lobes in semantic knowledge of social norms in frontotemporal dementia (FTD). Therefore, this study examined performance of FTD patients with either frontal (F-FTD, left temporal (LT-FTD) or bitemporal lobe atrophy (BT-FTD) on the Social Norms Questionnaire (SNQ) and explored what accounts for the variance in the SNQ-break norm subscale (i.e.

A normative study of the Color Trails Test in the adult Indian population.

The Color Trails Test (CTT) is a neuropsychological measure assessing for frontal and executive functioning, while also minimizing the cultural and language barriers inherent in similar measures such as the Trail Making Test (TMT). This study establishes convergent validity for the CTT in the Indian population by comparing participant performance on the CTT and TMT. It also generates culturally appropriate normative data for CTT-Form A among the Indian adult population.

Right orbitofrontal cortex mediates conscious olfactory perception.

Understanding how the human brain translates sensory impressions into conscious percepts is a key challenge of neuroscience research. Work in this area has overwhelmingly centered on the conscious experience of vision at the exclusion of the other senses--in particular, smell. We hypothesized that the orbitofrontal cortex (OFC) is a central substrate for olfactory conscious experience because of its privileged physiological role in odor processing.

The mini-mental state examination in behavioral variant frontotemporal dementia and primary progressive aphasia.

There is little information regarding the usefulness of the Mini-Mental State Examination (MMSE) for tracking progression of non-Alzheimer's disease dementias. This study examined the utility of the MMSE in capturing disease severity in the behavioral variant frontotemporal dementia (bvFTD) and primary progressive aphasia (PPA), 2 nonamnestic clinical dementia syndromes. Retrospective data from 41 bvFTD and 30 PPA patients were analyzed.