Programmer - How to get PowerShell to display registry Data values

Programmer Question

Take the Winlogon registry section, I would like PowerShell to display the Data value for
DefaultUserName.

This is as far as I have got:

Stage 1

get-itemproperty -path "hklm:\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\"

Stage 2

I can append:
-Name DefaultUserName

But this won't return a value.

Also other Names, despite being visible in Regedit, don't show in PowerShell, for example AutoAdminLogon.

Question, how can make PowerShell display what I can see with Regedit?

Find the answer here