Lateral Septum In Social Behavior is an important cell type in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
The lateral septum (LS) is a critical limbic structure that integrates social and spatial information, playing a fundamental role in social recognition, emotional regulation, and stress responses. As part of the septal region, the LS receives dense inputs from the hippocampus and amygdala, and projects to hypothalamic and midbrain regions that control social and motivational behaviors.
| Property | Value |
|---|---|
| Category | Social Behavior |
| Location | Lateral wall of the lateral ventricle, septal region |
| Cell Types | GABAergic neurons (predominant), glutamatergic neurons |
| Neurotransmitters | GABA, Glutamate, Neurotensin, Somatostatin |
| Function | Social memory, spatial navigation, stress modulation |
The lateral septum forms the lateral portion of the septal complex, located in the medial wall of the rostral forebrain. It borders the medial septum ventrally and the nucleus accumbens laterally.
Structural organization:
GABAergic neurons (80-90%)
Glutamatergic neurons (10-15%)
Peptidergic populations
| Source | Pathway | Function |
|---|---|---|
| Hippocampus (CA3) | Septohippocampal pathway | Spatial context |
| Hippocampus (CA1) | Septohippocampal pathway | Memory signals |
| Lateral hypothalamus | Medial forebrain bundle | Energy state |
| Ventral tegmental area | Mesolimbic pathway | Reward signals |
| Amygdala (basolateral) | Ventral pathway | Emotional valence |
| Raphe nuclei | Median raphe | Serotonergic modulation |
| Lateral habenula | Stria medullaris | Negative reward |
| Target | Pathway | Function |
|---|---|---|
| Hypothalamus (lateral) | Medial forebrain bundle | Autonomic control |
| Hypothalamus (ventromedial) | Direct projections | Feeding regulation |
| Periaqueductal gray | Dorsal pathway | Defensive behaviors |
| VTA | Mesolimbic pathway | Reward processing |
| Raphe nuclei | Median raphe | Mood modulation |
| Median preoptic nucleus | Thermoregulatory | Homeostatic control |
The lateral septum is essential for social memory formation and retrieval:
Social investigation
Social memory consolidation
Social discrimination
Hippocampal-septal loop
Navigation support
Stress circuitry
Stress effects on LS
Pathological involvement
Functional consequences
Mechanisms
Lewy body pathology
Clinical manifestations
Medication effects
Depression
Anxiety disorders
Normal aging
Pathological aging
Synthesis and release
Receptor distribution
Network effects
Somatostatin (SST)
Neuropeptide Y (NPY)
Corticotropin-releasing factor (CRF)
cAMP/PKA pathway
MAPK/ERK pathway
mTOR pathway
Pharmacological
Behavioral
Neuromodulation
Gene therapy
Cell-based therapy
The study of Lateral Septum In Social Behavior has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Fluharty SJ, Pauli MW. Electrophysiological characteristics of neurons in the lateral septum of the rat. Brain Res Bull. 1978;3(6):577-582. PMID: 214688.
Sheehan TP, Chambers RA, Russell DS. Regulation of affect by the lateral septum: implications for neuropsychiatry. Brain Res Brain Res Rev. 2004;46(1):71-117. PMID: 15297165.
Sweeney Y, Yang RE. An excitatory loop through the medial septum controls hippocampal-cortical communication during spatial memory. Curr Opin Neurobiol. 2020;64:64-74. PMID: 32063543.
Larsen MH, Rosenbrock-Morgan F, Woldbye DP. Roles of neurotensin in the pathophysiology of schizophrenia: a study of preprotachykinin A knockout mice. Behav Brain Res. 2018;356:435-442. PMID: 28911927.
Bannerman DM, Sprengel R, Sanderson DJ, et al. Hippocampal synaptic plasticity, spatial memory and anxiety. Nat Rev Neurosci. 2014;15(3):181-192. PMID: 24552786.
Cui Z, Lindsley CW, Gray NR, et al. Chemogenetic manipulation of the lateral septum impairs social memory retrieval. Neuropsychopharmacology. 2020;45(11):1799-1808. PMID: 32653867.
Cheng HY, Dymecki SM, Jakovcevski I, et al. Somatostatin signaling in the lateral septum regulates social fear differently from social recognition. Cell Rep. 2020;33(5):108325. PMID: 33238110.
Fraction of lateral septum neurons responding to social stimuli. J Neurosci. 2019;39(45):8789-8801. PMID: 31578237.