Post-stroke depression and cerebral laterality Sir, Stroke is the most common serious disorder in the world accounting for half of all the acute hospitalization cases of diseases [3]. Until recently, little attention has been paid to the neuropsychiatric sequelae of stroke. Current observations demonstrate that neuropsychiatric disorders are frequent after stroke and lesions of specific regions or functional systems of the brain result in behavioral syndromes similar to idiopathic conditions [1]. Views have been expressed that the risk of depression is greater with left and anterior hemispheric strokes as compared to posterior and right hemispheric strokes. However, the subject remains controversial. There are few reports in literature in which the symptoms of depression have been reported with right hemispheric stroke. In a study consisting of 15 patients with stroke, 10 had left sided lesions and depression was seen in seven patients (70%) whereas three (30%) had symptoms resembling generalized anxiety disorder. In rest of the five patients, lesions were found in the right hemisphere and out of these three (60%) had depression and one (20%) had symptoms resembling generalized anxiety disorder whereas one had symptoms resembling obsessive compulsive disorder. In a majority, the onset of symptoms was in the second week followed by those in third and fourth weeks. Hypertension was present in all the patients whereas four also had diabetes mellitus. There was family history of stroke in five patients. Depression occurs in 30-50% of patients after stroke [1]. Robbinson and Price [4] have found depression and vegetative symptoms in 63% of patients with left hemispheric injury and 1.4% in patients with right hemispheric injury. Carson et al. [2] did a meta-analysis of 143 articles and included 48 articles in the study. Only two reports of original data supported the views of association of post-stroke depression with site or laterality. In the present study also, no association of hemispheric laterality with depression was found in patients with stroke.

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ARlMA time series model building techniques are used to construct fifty-one state gasoline demand models based on monthly data for the period of January, 7975 to July, 7980. Statisticdly satisfactory models are obtained for all states.Price elasticity estimates are (0 for all states. All but four are statistically significant at the 0.05 level. The significant price elasticity estimates range from -0.738 to -0.377, with most clustering about -0.2. Estimates ofstate gasoline supply shortages for May, June, and July, 1979 are also presented which range from 0 to 8 percent of normal consumplion for the three-month-period.

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