Distinct Patterns of PV and SST GABAergic Neuronal Activity in the Basal Forebrain during Olfactory-Guided Behavior in Mice

Authors

• Elizabeth H Moss
• Evelyne K Tantry
• Elaine Le
• Pey-Shyuan Chin
• Priscilla Ambrosi
• Katie L Brandel-Ankrapp
• Benjamin R Arenkiel

Language

English

Publication Date

3-26-2025

Journal

The Journal of Neuroscience

DOI

10.1523/JNEUROSCI.0200-24.2025

PMID

39965928

PMCID

PMC11949486

PubMedCentral® Posted Date

2-18-2025

PubMedCentral® Full Text Version

Post-print

Abstract

Sensory perception relies on the flexible detection and interpretation of stimuli across variable contexts, conditions, and behavioral states. The basal forebrain (BF) is a hub for behavioral state regulation, supplying dense cholinergic and GABAergic projections to various brain regions involved in sensory processing. Of GABAergic neurons in the BF, parvalbumin (PV) and somatostatin (SST) subtypes serve opposing roles toward regulating behavioral states. To elucidate the role of BF circuits in sensory-guided behavior, we investigated GABAergic signaling dynamics during odor-guided decision-making in male and female mice. We used fiber photometry to record cell type-specific BF activity during an odor discrimination task and correlated temporal patterns of PV and SST neuronal activity with olfactory task performance. We found that while both PV-expressing and SST-expressing GABAergic neurons were excited during trial initiation, PV neurons were selectively suppressed by reward, whereas SST neurons were excited. Notably, chemogenetic inhibition of BF SST neurons modestly altered decision bias to favor reward seeking, while optogenetic inhibition of BF PV neurons during odor presentations improved discrimination accuracy. Together, these results suggest that the bidirectional activity of GABAergic BF neuron subtypes distinctly influence perception and decision-making during olfactory-guided behavior.

Keywords

Animals, Male, Mice, Female, GABAergic Neurons, Basal Forebrain, Somatostatin, Parvalbumins, Mice, Inbred C57BL, Olfactory Perception, Reward, Odorants, Mice, Transgenic, Optogenetics, Decision Making, Smell, Discrimination, Psychological, basal forebrain, decision-making, go/no-go, olfaction, parvalbumin, somatostatin

Published Open-Access

yes

Recommended Citation

Moss, Elizabeth H; Tantry, Evelyne K; Le, Elaine; et al., "Distinct Patterns of PV and SST GABAergic Neuronal Activity in the Basal Forebrain during Olfactory-Guided Behavior in Mice" (2025). Duncan NRI Faculty and Staff Publications. 231.
https://digitalcommons.library.tmc.edu/duncar_nri_pub/231