Neuropharmacology of the nucleus accumbens: Systemic morphine effects on single-unit responses evoked by ventral pallidum stimulation
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Circuit directionality for motivation: Lateral accumbens-pallidum, but not pallidum-accumbens, connections regulate motivational attraction to reward cues
2019, Neurobiology of Learning and MemoryCitation Excerpt :For instance, it is possible that the VP projections to the NAcLSh do not actually synapse on the same NAcLSh neurons that project to the VP, which would help explain the pathway dissociation here. More generally, both the NAc and VP are composed of heterogeneous cell types (Smith et al., 2009; Root et al., 2015; Bobadilla et al., 2017; Meredith & Totterdell, 1999; Yang et al., 2018), suggesting that feedforward or feedback signals between these structures will likely result in a complex mix of inhibitory and excitatory neuronal effects (Hakan, Berg, & Henriksen, 1992; Hakan, Eyl, & Henriksen, 1994; Hakan and Eyl, 1995; Heimer & Wilson, 1975; Churchill & Kalivas, 1994; Napier & Mitrovic, 1999). As such, the VP → NAcLSh DREADD manipulation here might not have led to the “relevant” sort of modulation of NAcLSh activity – whether targeting the relevant neuronal subpopulations or engaging the related activity patterns – to effect sign-tracking behavior (Gore, Schwartz, & Daniel, 2015).
Ventral pallidum roles in reward and motivation
2009, Behavioural Brain Research