Table 1. Definitions of brain regions.
Here, we provide the names, abbreviations, and anatomical features used to determine the brain regions collected for the MAPseq experiments.
| Brain Region | Abbreviation | Approximate Walker’s Areas |
A/P boundaries | M/L boundaries |
|---|---|---|---|---|
| Amygdala | n/a | All nuclei across entire A/P extent | ||
| Entorhinal cortex | ento | From the anterior tip to a point adjacent to the mid-hippocampus. | Midline to fundus of rhinal sulcus | |
| Hippocampus | HC | Anterior tip to the middle of hippocampus | ||
| Medial orbitofrontal cortex | mOFC | 11m, 13a/b, 14 | From emergence of medial orbital sulcus to its disappearance | Between rostral sulcus and medial orbital sulcus |
| Lateral orbitofrontal cortex | lOFC | 11l, 12m/r, 13m/l | From emergence of lateral orbital sulcus to its disappearance | Between fundus of medial sulcus and fundus of lateral orbital sulcus |
| Ventrolateral prefrontal cortex | vlPFC | 45, 12o, 12l | From emergence of lateral orbital sulcus to its disappearance | Between lateral orbital sulcus and lateral convexity of ventral surface |
| Dorsal anterior cingulate cortex | dACC | 24 | From emergence of cingulate sulcus until area 25 disappears from medial wall/emergence of septum. | Dorsal and ventral banks of cingulate sulcus, and cortex immediately dorsal to corpus callosum |
| Subcallosal anterior cingulate cortex | scACC | 25 | Medial surface, ventral to corpus callosum, medial/dorsal to medial orbital sulcus | |
| Perigenual anterior cingulate cortex | pgACC | 32/24 | Anterior to corpus callosum | Cortex on medial surface of the frontal lobe between the rostral sulcus and the cingulate sulcus |
| Dorsal premotor cortex | PMd | 6 | Posterior to emergence of dorsal arcuate sulcus to emergence of arcuate spur | Dorsal convexity to arcuate spur |
| Caudate | n/a | |||
| Putamen | n/a | |||
| Nucleus Accumbens | NAcc | From presence of internal capsule to the full separation of caudate nucleus and putamen | Ventromedial portion of striatum | |
| Agranular Insula | AI | Orbital surface after disappearance of medial and lateral orbital sulci | From medial corner of orbital surface to approximate location of fundus of lateral sulcus | |
| Insula | n/a | Posterior to frontal/temporal junction to midpoint of hippocampus | Most medial vertically-oriented cortex in depth of lateral fissure | |
| Medial dorsal thalamus | MD | From the optic tract joining the cerebral white matter to the lateral habenula | Dorsal and medial thalamic nuclei |