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      Cerebellar volume asymmetries are related to handedness: A quantitative MRI study

      Neuropsychologia

      Elsevier BV

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          Abstract

          Four cerebellar subregions were delineated (left, right; anterior, posterior), and their volumes measured on contiguous 3.1 mm coronal MR images in 15 dextral and 8 nondextral healthy control subjects. (1) Left and right cerebellar hemisphere volume asymmetries interacted with anterior-posterior level (anterior: right > left; posterior: left > right), following a pattern commonly found in the neocortex; (2) A significant handedness effect was found (P < or =0.01) on a composite index of cerebellar asymmetry, such that dextrals showed more asymmetry than nondextrals. These data suggest that the same pattern of asymmetries observed at the neocortical level is also present in the metencephalon. These asymmetries, possibly resulting from multiple developmental growth gradients acting on the metencephalon early in gestation, are associated with handedness differences in adulthood.

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          Author and article information

          Journal
          Neuropsychologia
          Neuropsychologia
          Elsevier BV
          00283932
          April 1995
          April 1995
          : 33
          : 4
          : 407-419
          Article
          10.1016/0028-3932(94)00125-9
          7617152
          © 1995

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