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template:neighbours [2018/10/21 15:13]
42.49.180.224 [Templates for defining neighbouring channels]
template:neighbours [2018/06/13 16:54] (current)
141.14.159.43 fix easycap link
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 A definition of neighbouring channels is needed when computing cluster in channel-space (see [[reference:​ft_timelockstatistics|ft_timelockstatistics]] and [[reference:​ft_freqstatistics|ft_freqstatistics]]) or when repairing missing channels (because a missing channel will be reconstructed by some weighted average of its neighbours, see [[reference:​ft_channelrepair|ft_channelrepair]]). FieldTrip comes with a variety of templates for defining neighbouring channels. ​ The rationale for these templates was that sensor positions across measurements do not vary drastically,​ so that it is safe to assume that neighbouring sensors are always equal. The templates are manually modified versions of automatically generated templates, with the idea to make them symmetric if the sensor positions are symmetric as well. The following provides an explanation how we derived the templates for different systems. A definition of neighbouring channels is needed when computing cluster in channel-space (see [[reference:​ft_timelockstatistics|ft_timelockstatistics]] and [[reference:​ft_freqstatistics|ft_freqstatistics]]) or when repairing missing channels (because a missing channel will be reconstructed by some weighted average of its neighbours, see [[reference:​ft_channelrepair|ft_channelrepair]]). FieldTrip comes with a variety of templates for defining neighbouring channels. ​ The rationale for these templates was that sensor positions across measurements do not vary drastically,​ so that it is safe to assume that neighbouring sensors are always equal. The templates are manually modified versions of automatically generated templates, with the idea to make them symmetric if the sensor positions are symmetric as well. The following provides an explanation how we derived the templates for different systems.
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 ===== Electrode neighbour templates ===== ===== Electrode neighbour templates =====
  
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   * Yokogawa 440-channel system (yokogawa440_neighb.mat)   * Yokogawa 440-channel system (yokogawa440_neighb.mat)
   * Old Yokogawa 440-channel system (yokogawa440_old_neighb.mat)   * Old Yokogawa 440-channel system (yokogawa440_old_neighb.mat)
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