diff --git a/src/04-modality-specific-files/02-magnetoencephalography.md b/src/04-modality-specific-files/02-magnetoencephalography.md index 77169924e9..22ecf0f8b8 100644 --- a/src/04-modality-specific-files/02-magnetoencephalography.md +++ b/src/04-modality-specific-files/02-magnetoencephalography.md @@ -218,14 +218,13 @@ Date time information MUST be expressed as indicated in [Units](../02-common-pri {{ MACROS___make_filename_template(datatypes=["meg"], suffixes=["channels"]) }} -This file is RECOMMENDED as it provides easily searchable information across -BIDS datasets for example, general curation, response to queries or batch -analysis. -To avoid confusion, the channels SHOULD be listed in the order they -appear in the MEG data file. -Missing values MUST be indicated with `n/a`. - -The columns of the Channels description table stored in `*_channels.tsv` are: +This file is RECOMMENDED as it provides easily searchable information across BIDS datasets. +For example for general curation, response to queries, or for batch analysis. +To avoid confusion, the channels SHOULD be listed in the order they appear in the MEG data file. +Any number of additional columns MAY be added to provide additional information about the channels. +Missing values MUST be indicated with `"n/a"`. + +The columns of the channels description table stored in `*_channels.tsv` are: MUST be present **in this specific order**: diff --git a/src/04-modality-specific-files/03-electroencephalography.md b/src/04-modality-specific-files/03-electroencephalography.md index e6b7178491..71ed7374ef 100644 --- a/src/04-modality-specific-files/03-electroencephalography.md +++ b/src/04-modality-specific-files/03-electroencephalography.md @@ -184,15 +184,13 @@ Date time information MUST be expressed as indicated in [Units](../02-common-pri {{ MACROS___make_filename_template(datatypes=["eeg"], suffixes=["channels"]) }} -This file is RECOMMENDED as it provides easily searchable information across -BIDS datasets for example, general curation, response to queries or batch -analysis. -To avoid confusion, the channels SHOULD be listed in the order they -appear in the EEG data file. -Any number of additional columns may be added to provide additional information -about the channels. - -Note that electrode positions SHOULD NOT be added to this file, but to [`*_electrodes.tsv`](./03-electroencephalography.md#electrodes-description-_electrodestsv). +This file is RECOMMENDED as it provides easily searchable information across BIDS datasets. +For example for general curation, response to queries, or for batch analysis. +To avoid confusion, the channels SHOULD be listed in the order they appear in the EEG data file. +Any number of additional columns MAY be added to provide additional information about the channels. + +Note that electrode positions SHOULD NOT be added to this file, but to +[`*_electrodes.tsv`](./03-electroencephalography.md#electrodes-description-_electrodestsv). Furthermore, the entries in `*_electrodes.tsv` and `*_channels.tsv` do not have to match exactly, as for example in the case of recording a single `EOG` channel from a bipolar referencing scheme of two electrodes, or a data channel originating from an auxiliary, non-electrode device. @@ -200,7 +198,7 @@ That is, in most cases `*_electrodes.tsv` will have more entries than `*_channel See the examples for `*_channels.tsv` below, and for `*_electrodes.tsv` in ["Electrodes description"](./03-electroencephalography.md#electrodes-description-_electrodestsv). -The columns of the Channels description table stored in `*_channels.tsv` are: +The columns of the channels description table stored in `*_channels.tsv` are: MUST be present **in this specific order**: diff --git a/src/04-modality-specific-files/04-intracranial-electroencephalography.md b/src/04-modality-specific-files/04-intracranial-electroencephalography.md index 2c2983e8ba..a258492927 100644 --- a/src/04-modality-specific-files/04-intracranial-electroencephalography.md +++ b/src/04-modality-specific-files/04-intracranial-electroencephalography.md @@ -204,21 +204,17 @@ Date time information MUST be expressed as indicated in [Units](../02-common-pri {{ MACROS___make_filename_template(datatypes=["ieeg"], suffixes=["channels"]) }} -A channel represents one time series recorded with the recording system (for -example, there can be a bipolar channel, recorded from two electrodes or contact -points on the tissue). +A channel represents one time series recorded with the recording system +(for example, there can be a bipolar channel, recorded from two electrodes or contact points on the tissue). Although this information can often be extracted from the iEEG recording, -listing it in a simple `.tsv` document makes it easy to browse or search (for example, -searching for recordings with a sampling frequency of >=1000 Hz). -Hence, the channels.tsv is RECOMMENDED. -Channels SHOULD appear in the table in the same order they do in the iEEG data -file. -Any number of additional columns may be provided to provide additional -information about the channels. -Note that electrode positions SHOULD NOT be added to this file but to -`*_electrodes.tsv`. - -The columns of the Channels description table stored in `*_channels.tsv` are: +listing it in a simple `.tsv` document makes it easy to browse or search +(for example, searching for recordings with a sampling frequency of >=1000 Hz). +Hence, the `channels.tsv` file is RECOMMENDED. +Channels SHOULD appear in the table in the same order they do in the iEEG data file. +Any number of additional columns MAY be provided to provide additional information about the channels. +Note that electrode positions SHOULD NOT be added to this file but to `*_electrodes.tsv`. + +The columns of the channels description table stored in `*_channels.tsv` are: MUST be present **in this specific order**: