chapter1.md

title	Chapter 1: Getting Started
description	This chapter will introduce you to the basics of the Neurodata Without Borders: Neurophysiology (NWB:N) data format using Python.
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Let's try out PyNWB! First, let's review how to create an NWBFile object. Change the code below to do the following:

• Import the NWBFile class from pynwb, create an NWBFile object
• You will need to pass in the arguments session_description, identifier, and session_start_time to the constructor.
• Finally, print out the session identifier from the NWBFile.

Review the code in Section 1 if you are stuck!

Pop quiz! An NWBFile requires a session_description, an identifier, and what?

institution is not a required argument, but it is and optional argument.

subject is not a required argument, but it is and optional argument.

Correct! You must specify a session_start_time to which all timestamps in the NWBFile will be referenced.

Part 1: Creating a TimeSeries

Now let's review how to create a TimeSeries.

• Import the TimeSeries class from pynwb, create the TimeSeries object
• You will need to pass in the arguments data, units, and timestamps to the constructor.
• Finally, print out the data from the TimeSeries.

Review the code in Section 1 if you are stuck!

Part 2: Add a TimeSeries to an NWBFile

Now let's review how to add a TimeSeries to an NWBFile.

• Use the appropriate method of NWBFile to add the TimeSeries to nwbfile.
• Access the TimeSeries object that you just added and print it.

Use the name of the time series to get it from nwbfile.acquisition Review the code in Section 1 if you are stuck!

What units are all timestamps of TimeSeries stored as?

Sorry, try again.

Good job!

Sorry, try again.