Neuroimaging Of Human Interval Timing

A great variety of neuroimaging techniques, behavioral tasks, and data analyses have been applied to date in the study of timing, yet firm conclusions from this mass of data remain elusive (for reviews, see Harrington and Haaland, 1999; Macar et al., 2002). For example, some studies find that attention to time activates a left hemisphere fronto-parietal network (Coull and Nobre, 1998), while others argue that this function is served by a similar network in the right hemisphere (Rao et al., 2001). In spite of some conflicting findings in the human timing literature, many results are consonant with drug and lesion studies from the animal literature, which argue that the basal ganglia play a critical role in interval timing (Meck, 1996; Meck and Benson, 2002; see also Diedrichsen et al., this volume; Malapani and Rakitin, this volume; Matell et al., this volume).

A number of neuroimaging studies have been published examining motor timing (e.g., Gruber et al., 2000; Harrington et al., 1999), motor sequencing (Lepage et al., 1999), motor rhythms (Penhune et al., 1998), attention cued to a particular moment in time (Coull and Nobre, 1998), feedback about timing (Brunia et al., 2000), and sensory, motor, or cognitive activation

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