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Cited by 313Neurotransmitter Receptor Influence on BehaviorNeuroendocrine regulation and behaviorNeural and Behavioral Psychology Studies

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The role of the striatum in social behavior

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Báez-Mendoza, Raymundo, Schultz, Wolfram·2013·Frontiers in Neuroscience
DOI 10.3389/fnins.2013.00233PMC PMC3857563
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Abstract

Where and how does the brain code reward during social behavior? Almost all elements of the brain's reward circuit are modulated during social behavior. The striatum in particular is activated by rewards in social situations. However, its role in social behavior is still poorly understood. Here, we attempt to review its participation in social behaviors of different species ranging from voles to humans. Human fMRI experiments show that the striatum is reliably active in relation to others' rewards, to reward inequity and also while learning about social agents. Social contact and rearing conditions have long-lasting effects on behavior, striatal anatomy and physiology in rodents and primates. The striatum also plays a critical role in pair-bond formation and maintenance in monogamous voles. We review recent findings from single neuron recordings showing that the striatum contains cells that link own reward to self or others' actions. These signals might be used to solve the agency-credit assignment problem: the question of whose action was responsible for the reward. Activity in the striatum has been hypothesized to integrate actions with rewards. The picture that emerges from this review is that the striatum is a general-purpose subcortical region capable of integrating social information into coding of social action and reward.

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Figure 1 Depiction of the brain's reward circuit highlighting the role of the striatum and its anatomical connections. Abbreviations: dACC, dorsal anterior cingulate cortex; DPFC, dorsal prefrontal cortex; vmPFC, ventromedial prefrontal cortex; VP, ventral pallidum; LHb, lateral habenula; Hypo, hypothalamus; STN, subthalamic nucleus; SN, substantia nigra; VTA, ventral tegmental area; PPT, pedunculopontine tegmentum. Based on Haber and Knutson (2010), reproduced with permission.
Figure 1 Depiction of the brain's reward circuit highlighting the role of the striatum and its anatomical connections. Abbreviations: dACC, dorsal anterior cingulate cortex; DPFC, dorsal prefrontal cortex; vmPFC, ventromedial prefrontal cortex; VP, ventral pallidum; LHb, lateral habenula; Hypo, hypothalamus; STN, subthalamic nucleus; SN, substantia nigra; VTA, ventral tegmental area; PPT, pedunculopontine tegmentum. Based on Haber and Knutson (2010), reproduced with permission.CC BY · PubMed Central
Figure 2 Action and reward coding by striatal neurons. (A) Example striatal neuron active before movement (go) and silent before no-movement (no-go). Based on Schultz and Romo (1988), reproduced with permission. (B) Example striatal neurons coding reward. First row depicts a neuron with phasic active after juice reward delivery independent of the action to obtain reward. Second row depicts a neuron with tonic activity after juice reward delivery. Third row shows a neuron with tonic activity after no reward is delivered. Based on Hollerman et al. (1998), reproduced with permission. (C) Example caudate neuron coding the conjunction of action and reward. This neuron is active during the presentation of a cue indicating the saccade necessary to complete the trial if the trial will be rewarded (rewarded direction is highlighted by a bulls eye). R, right; U, up; L, left; D, down. Polar plots show the average response for each cue and direction. Based on Kawagoe et al. (1998), reproduced with permission. (D) (Top) Depiction of the probability of larger rewards associated with left or right actions on each condition block. Colored numbers refer to the probability associated with left-right actions. (Bottom) Example striatal neuron coding right action value. Based on Samejima et al. (2005), reproduced with permission.
Figure 2 Action and reward coding by striatal neurons. (A) Example striatal neuron active before movement (go) and silent before no-movement (no-go). Based on Schultz and Romo (1988), reproduced with permission. (B) Example striatal neurons coding reward. First row depicts a neuron with phasic active after juice reward delivery independent of the action to obtain reward. Second row depicts a neuron with tonic activity after juice reward delivery. Third row shows a neuron with tonic activity after no reward is delivered. Based on Hollerman et al. (1998), reproduced with permission. (C) Example caudate neuron coding the conjunction of action and reward. This neuron is active during the presentation of a cue indicating the saccade necessary to complete the trial if the trial will be rewarded (rewarded direction is highlighted by a bulls eye). R, right; U, up; L, left; D, down. Polar plots show the average response for each cue and direction. Based on Kawagoe et al. (1998), reproduced with permission. (D) (Top) Depiction of the probability of larger rewards associated with left or right actions on each condition block. Colored numbers refer to the probability associated with left-right actions. (Bottom) Example striatal neuron coding right action value. Based on Samejima et al. (2005), reproduced with permission.CC BY · PubMed Central
Figure 3 fMRI studies of social behaviors in which the striatum is active. Peak activation coordinates in the striatum of the fMRI studies cited in this review color-coded for each section as illustrated in the legend. Studies using a region of interest analysis strategy were not included in this image. These striatal responses are compatible with a general activation in response to social behaviors, including social rewards. A functional subdivisions according to types of social rewards need to await further experiments. Studies aggregated in “Other social rewards”: (Rilling et al., 2002; Moll et al., 2006; Izuma et al., 2008; Mobbs et al., 2009; Acevedo et al., 2012; Fareri et al., 2012; Korn et al., 2012). Studies clustered in “Observing others”: (Bartels and Zeki, 2000, 2004; Aron, 2005; Acevedo et al., 2012). Studies in “Learning about others”: (Delgado et al., 2005; King-Casas et al., 2005; Baumgartner et al., 2008; Burke et al., 2010; Phan et al., 2010; Xiang et al., 2012; Fouragnan et al., 2013). Studies in “Reward inequity”: (Moll et al., 2006; Fliessbach et al., 2007; Hsu et al., 2008; Tricomi et al., 2010).
Figure 3 fMRI studies of social behaviors in which the striatum is active. Peak activation coordinates in the striatum of the fMRI studies cited in this review color-coded for each section as illustrated in the legend. Studies using a region of interest analysis strategy were not included in this image. These striatal responses are compatible with a general activation in response to social behaviors, including social rewards. A functional subdivisions according to types of social rewards need to await further experiments. Studies aggregated in “Other social rewards”: (Rilling et al., 2002; Moll et al., 2006; Izuma et al., 2008; Mobbs et al., 2009; Acevedo et al., 2012; Fareri et al., 2012; Korn et al., 2012). Studies clustered in “Observing others”: (Bartels and Zeki, 2000, 2004; Aron, 2005; Acevedo et al., 2012). Studies in “Learning about others”: (Delgado et al., 2005; King-Casas et al., 2005; Baumgartner et al., 2008; Burke et al., 2010; Phan et al., 2010; Xiang et al., 2012; Fouragnan et al., 2013). Studies in “Reward inequity”: (Moll et al., 2006; Fliessbach et al., 2007; Hsu et al., 2008; Tricomi et al., 2010).CC BY · PubMed Central
Figure 4 Agency credit assignment cartoon and striatal neurons coding social action and own reward. (A) Once the monkey receives a banana it needs to know which action produced reward to assign credit. The action can be its own (solid lines) or someone else's (dashed lines). Many actions take place before reward is delivered, therefore looking at a memory of each action or eligibility trace (brown arrows) can solve the agency credit assignment problem. (B) Task sequence for the actor: shape of conditioned cue predicted absence or presence of reward for each animal. Appearance of a subsequent blue go signal was followed by key release, stimulus touch and reward for actor, and later for conspecific. After the ITI the monkeys switched roles as actor and passive. (C) Single striatal neuron coding own action and own reward. Note the higher neuronal activity during own action and own reward compared to own reward absence and conspecific's actions. (D) Single striatal neuron coding social action and own reward. This neuron is active during conspecific's actions that will result in own reward, a complement to the neuron shown in (A). Monkey picture by smerikal (Flickr), reproduced with permission. Panels (B–D) based on Báez-Mendoza et al. (2013), reproduced with permission.
Figure 4 Agency credit assignment cartoon and striatal neurons coding social action and own reward. (A) Once the monkey receives a banana it needs to know which action produced reward to assign credit. The action can be its own (solid lines) or someone else's (dashed lines). Many actions take place before reward is delivered, therefore looking at a memory of each action or eligibility trace (brown arrows) can solve the agency credit assignment problem. (B) Task sequence for the actor: shape of conditioned cue predicted absence or presence of reward for each animal. Appearance of a subsequent blue go signal was followed by key release, stimulus touch and reward for actor, and later for conspecific. After the ITI the monkeys switched roles as actor and passive. (C) Single striatal neuron coding own action and own reward. Note the higher neuronal activity during own action and own reward compared to own reward absence and conspecific's actions. (D) Single striatal neuron coding social action and own reward. This neuron is active during conspecific's actions that will result in own reward, a complement to the neuron shown in (A). Monkey picture by smerikal (Flickr), reproduced with permission. Panels (B–D) based on Báez-Mendoza et al. (2013), reproduced with permission.CC BY · PubMed Central

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Cites

Research works printed but not linked: 3

  1. Báez-Mendoza R. Hoffman K. L. (2009). Object ontology in temporal lobe ensembles, in Cortical Mechanisms of Vision, 1st Edn., eds Jenkin M. Harris L. (Cambridge: Cambridge University Press), 237– 253
  2. Dawkins R. (2006). The Selfish Gene: – with a New Introduction by the Author. Oxford: University Press
  3. Hall F. S. Wilkinson L. S. Humby T. Robbins T. W. (1999). Maternal deprivation of neonatal rats produces enduring changes in dopamine function. Synapse 32, 37– 43 10188636

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Metadata

Authors
Báez-Mendoza, R., & Schultz, W.
Affiliations
University of Cambridge (GB)
Corresponding author
Báez-Mendoza, Raymundo
ORCID
Venue
Frontiers in Neuroscience
Publisher
Frontiers Media SA
Published
2013
Volume
7
Pages
233-233
ISSN
1662-453X (ISSN-L)
DOI
10.3389/fnins.2013.00233
PMC
PMC3857563
OpenAlex
W2116794070
Cited by
312
References
171
Citations by year
2026: 18 · 2025: 22 · 2024: 23 · 2023: 27 · 2022: 38 · 2021: 36 · 2020: 26 · 2019: 32 · 2018: 21 · 2017: 22 · 2016: 17 · 2015: 19 · 2014: 11
FWCI
1.59
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Neuroscience (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Wellcome Trust (095495)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
striatum, social behavior, reward coding, social reward, reward inequity, social learning, pair bonding, social contact, rearing conditions, single-unit recording, reward systems

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