Articles written in Journal of Biosciences
Volume 19 Issue 1 March 1994 pp 91-102
This contribution deals with the scanning electron microscopic surface structure of olfactory epithelium in four hillstream teleosts from the glacialfed river Alaknanda in Garhwal Himalaya (UP, India). The closely related species—
Volume 20 Issue 3 June 1995 pp 385-396
The olfactory epithelium of two closely related species of snowtrout—
Volume 38 Issue 5 December 2013 pp 905-915 Articles
Neuropsychological studies have shown that alcohol dependence is associated with neurocognitive deficits in tasks requiring memory, perceptual motor skills, abstraction and problem solving, whereas language skills are relatively spared in alcoholics despite structural abnormalities in the language-related brain regions. To investigate the preserved mechanisms of language processing in alcohol-dependents, functional brain imaging was undertaken in healthy controls (𝑛=18) and alcohol-dependents (𝑛=16) while completing a lexical semantic judgment task in a 3 T MR scanner. Behavioural data indicated that alcohol-dependents took more time than controls for performing the task but there was no significant difference in their response accuracy. fMRI data analysis revealed that while performing the task, the alcoholics showed enhanced activations in left supramarginal gyrus, precuneus bilaterally, left angular gyrus, and left middle temporal gyrus as compared to control subjects. The extensive activations observed in alcoholics as compared to controls suggest that alcoholics recruit additional brain areas to meet the behavioural demands for equivalent task performance. The results are consistent with previous fMRI studies suggesting compensatory mechanisms for the execution of task for showing an equivalent performance or decreased neural efficiency of relevant brain networks. However, on direct comparison of the two groups, the results did not survive correction for multiple comparisons; therefore, the present findings need further exploration.