Thread by @hipposubfields

Better late than never! (It's still Wednesday in some timezones!) This week's #SubfieldWednesday will be a bit briefer than normal.

#SubfieldWednesday (1/n)

Some of you might have been surprised last week when we described the hippocampal subfields as layered structures.

#SubfieldWednesday (2/n)

Even though the hippocampus sometimes gets grouped together with subcortical structures like the thalamus and basal ganglia, the dentate gyrus, CA fields, and subiculum are all part of a special type of cortex called the allocortex!

#SubfieldWednesday (3/n)

What the heck is the allocortex, you ask?

#SubfieldWednesday (4/n)

Remember that the human neocortex (most of what is commonly referred to as generic "cortex") is composed of six layers.

#SubfieldWednesday (5/n)

The allocortex refers to the parts of the brain (including the hippocampus proper) that have only three layers: molecular, pyramidal, and polymorphic.

#SubfieldWednesday (6/n)

Now for a question to the subfield/anatomy fans out there! What about the entorhinal cortex? Is it allocortex or neocortex?? What about the perirhinal and parahippocampal cortices?

#SubfieldWednesday (end)