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Number Processing in the Ventral Visual Stream?

Number Processing in the Ventral Visual Stream?. Zoe Woodhead Robert Leech Richard Wise. L Posterior Fusiform. R Posterior Fusiform. L STS. Woodhead et al, In Preparation. Reinke et al, 2008. Polk et al, 2002. To what extent are numbers processed by the ventral visual stream?

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Number Processing in the Ventral Visual Stream?

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  1. Number Processing in the Ventral Visual Stream? Zoe Woodhead Robert Leech Richard Wise

  2. L Posterior Fusiform R Posterior Fusiform L STS Woodhead et al, In Preparation Reinke et al, 2008 Polk et al, 2002

  3. To what extent are numbers processed by the ventral visual stream? • Can this be modified by task demands? • 5 conditions: • Reading words • Reading numbers • Reading narratives • Reading calculations • False Font Plus fixation / other neutral stimuli? the cat sat on the mat 200 +1000 =1200 x20 =24000 -20000 =4000

  4. Design: • ~ 20 right handed, healthy volunteers • Block design • 22.5 second blocks • 12 second inter-block interval • 5 repetitions of each condition per run, 2 runs • Total of 3 min 45 seconds acquisition per condition • Run time total = 14 minutes 10 seconds • Scanning protocol: • 2 second whole-brain EPI, 425 volumes per run • MPRAGE structural scan • Field maps?

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