Neurotensin(8-13) is a peptide fragment derived from the larger neurotensin peptide, known for its role in modulating neurotransmitter systems. It is primarily used in research settings to study the effects of neurotensin on the central nervous system, particularly in relation to dopamine signaling. This peptide is valuable in exploring its potential antipsychotic and analgesic properties, as it interacts with neurotensin receptors in the brain. Additionally, it is utilized in studies focusing on gastrointestinal motility and the regulation of feeding behavior. Its shorter sequence makes it a convenient tool for investigating specific receptor interactions and biological pathways.