ElectricalSeries A time series of acquired voltage data from extracellular recordings. The data field is an int or float array storing data in volts. The first dimension should always represent time. The second dimension, if present, should represent channels.
| channel_conversion |
(single) Channel-specific conversion factor. Multiply the data in the 'data' dataset by these values along the channel axis
(as indicated by axis attribute) AND by the global conversion factor in the 'conversion' attribute of 'data' to get the data
values in Volts, i.e, data in Volts = data * data.conversion * channel_conversion. This approach allows for both global and
per-channel data conversion factors needed to support the storage of electrical recordings as native values generated by data
acquisition systems. If this dataset is not present, then there is no channel-specific conversion factor, i.e. it is 1 for
all channels.
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| channel_conversion_axis |
(int32) The zero-indexed axis of the 'data' dataset that the channel-specific conversion factor corresponds to. This value
is fixed to 1.
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| comments |
(char) Human-readable comments about the TimeSeries. This second descriptive field can be used to store additional information,
or descriptive information if the primary description field is populated with a computer-readable string.
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| control |
(uint8) Numerical labels that apply to each time point in data for the purpose of querying and slicing data by these values.
If present, the length of this array should be the same size as the first dimension of data.
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| control_description |
(char) Description of each control value. Must be present if control is present. If present, control_description[0] should
describe time points where control == 0.
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| data |
REQUIRED (any) Data values. Data can be in 1-D, 2-D, 3-D, or 4-D. The first dimension should always represent time. This can
also be used to store binary data (e.g., image frames). This can also be a link to data stored in an external file.
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| data_continuity |
(char) Optionally describe the continuity of the data. Can be "continuous", "instantaneous", or "step". For example, a voltage
trace would be "continuous", because samples are recorded from a continuous process. An array of lick times would be "instantaneous",
because the data represents distinct moments in time. Times of image presentations would be "step" because the picture remains
the same until the next timepoint. This field is optional, but is useful in providing information about the underlying data.
It may inform the way this data is interpreted, the way it is visualized, and what analysis methods are applicable.
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| data_conversion |
(single) Scalar to multiply each element in data to convert it to the specified 'unit'. If the data are stored in acquisition
system units or other units that require a conversion to be interpretable, multiply the data by 'conversion' to convert the
data to the specified 'unit'. e.g. if the data acquisition system stores values in this object as signed 16-bit integers (int16
range -32,768 to 32,767) that correspond to a 5V range (-2.5V to 2.5V), and the data acquisition system gain is 8000X, then
the 'conversion' multiplier to get from raw data acquisition values to recorded volts is 2.5/32768/8000 = 9.5367e-9.
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| data_offset |
(single) Scalar to add to the data after scaling by 'conversion' to finalize its coercion to the specified 'unit'. Two common
examples of this include (a) data stored in an unsigned type that requires a shift after scaling to re-center the data, and
(b) specialized recording devices that naturally cause a scalar offset with respect to the true units.
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| data_resolution |
(single) Smallest meaningful difference between values in data, stored in the specified by unit, e.g., the change in value
of the least significant bit, or a larger number if signal noise is known to be present. If unknown, use -1.0.
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| data_unit |
(char) Base unit of measurement for working with the data. Actual stored values are not necessarily stored in these units.
To access the data in these units, multiply 'data' by 'conversion' and add 'offset'.
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| description |
(char) Description of the time series. |
| electrodes |
REQUIRED (DynamicTableRegion) DynamicTableRegion pointer to the electrodes that this time series was generated from. |
| filtering |
(char) Filtering applied to all channels of the data. For example, if this ElectricalSeries represents high-pass-filtered
data (also known as AP Band), then this value could be "High-pass 4-pole Bessel filter at 500 Hz". If this ElectricalSeries
represents low-pass-filtered LFP data and the type of filter is unknown, then this value could be "Low-pass filter at 300
Hz". If a non-standard filter type is used, provide as much detail about the filter properties as possible.
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| starting_time |
(double) Timestamp of the first sample in seconds. When timestamps are uniformly spaced, the timestamp of the first sample
can be specified and all subsequent ones calculated from the sampling rate attribute.
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| starting_time_rate |
(single) Sampling rate, in Hz. |
| starting_time_unit |
(char) Unit of measurement for time, which is fixed to 'seconds'. |
| timestamps |
(double) Timestamps for samples stored in data, in seconds, relative to the common experiment master-clock stored in NWBFile.timestamps_reference_time. |
| timestamps_interval |
(int32) Value is '1' |
| timestamps_unit |
(char) Unit of measurement for timestamps, which is fixed to 'seconds'. |
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addlistener |
Add listener for event. |
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delete |
Delete a handle object. |
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eq |
== (EQ) Test handle equality. |
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export |
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findobj |
Find objects matching specified conditions. |
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findprop |
Find property of MATLAB handle object. |
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ge |
>= (GE) Greater than or equal relation for handles. |
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gt |
> (GT) Greater than relation for handles. |
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isvalid |
Test handle validity. |
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le |
<= (LE) Less than or equal relation for handles. |
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listener |
Add listener for event without binding the listener to the source object. |
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loadAll |
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lt |
< (LT) Less than relation for handles. |
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ne |
~= (NE) Not equal relation for handles. |
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notify |
Notify listeners of event. |
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validate_channel_conversion |
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validate_comments |
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validate_control |
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validate_control_description |
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validate_data |
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validate_data_continuity |
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validate_data_conversion |
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validate_data_offset |
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validate_data_resolution |
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validate_data_unit |
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validate_description |
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validate_electrodes |
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validate_filtering |
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validate_starting_time |
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validate_starting_time_rate |
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validate_timestamps |
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