Orbital prefrontal cortex volume predicts social network size: An imaging study of individual differences in humansCitation formats

  • Authors:
  • Joanne Powell
  • Penelope A. Lewis
  • Neil Roberts
  • Marta García-Fiñana
  • R. I M Dunbar

Standard

Orbital prefrontal cortex volume predicts social network size: An imaging study of individual differences in humans. / Powell, Joanne; Lewis, Penelope A.; Roberts, Neil; García-Fiñana, Marta; Dunbar, R. I M.

In: Proceedings of the Royal Society B: Biological Sciences, Vol. 279, No. 1736, 07.06.2012, p. 2157-2162.

Research output: Contribution to journalArticle

Harvard

Powell, J, Lewis, PA, Roberts, N, García-Fiñana, M & Dunbar, RIM 2012, 'Orbital prefrontal cortex volume predicts social network size: An imaging study of individual differences in humans', Proceedings of the Royal Society B: Biological Sciences, vol. 279, no. 1736, pp. 2157-2162. https://doi.org/10.1098/rspb.2011.2574

APA

Powell, J., Lewis, P. A., Roberts, N., García-Fiñana, M., & Dunbar, R. I. M. (2012). Orbital prefrontal cortex volume predicts social network size: An imaging study of individual differences in humans. Proceedings of the Royal Society B: Biological Sciences, 279(1736), 2157-2162. https://doi.org/10.1098/rspb.2011.2574

Vancouver

Powell J, Lewis PA, Roberts N, García-Fiñana M, Dunbar RIM. Orbital prefrontal cortex volume predicts social network size: An imaging study of individual differences in humans. Proceedings of the Royal Society B: Biological Sciences. 2012 Jun 7;279(1736):2157-2162. https://doi.org/10.1098/rspb.2011.2574

Author

Powell, Joanne ; Lewis, Penelope A. ; Roberts, Neil ; García-Fiñana, Marta ; Dunbar, R. I M. / Orbital prefrontal cortex volume predicts social network size: An imaging study of individual differences in humans. In: Proceedings of the Royal Society B: Biological Sciences. 2012 ; Vol. 279, No. 1736. pp. 2157-2162.

Bibtex

@article{b0ac6351f06a4955940d0657fa55438e,
title = "Orbital prefrontal cortex volume predicts social network size: An imaging study of individual differences in humans",
abstract = "The social brain hypothesis, an explanation for the unusually large brains of primates, posits that the size of social group typical of a species is directly related to the volume of its neocortex. To test whether this hypothesis also applies at the within-species level, we applied the Cavalieri method of stereology in conjunction with point counting on magnetic resonance images to determine the volume of prefrontal cortex (PFC) subfields, including dorsal and orbital regions. Path analysis in a sample of 40 healthy adult humans revealed a significant linear relationship between orbital (but not dorsal) PFC volume and the size of subjects' social networks that was mediated by individual intentionality (mentalizing) competences. The results support the social brain hypothesis by indicating a relationship between PFC volume and social network size that applies within species, and, more importantly, indicates that the relationship is mediated by social cognitive skills. {\circledC} 2012 The Royal Society.",
keywords = "MRI, Prefrontal cortex, Social network, Stereology",
author = "Joanne Powell and Lewis, {Penelope A.} and Neil Roberts and Marta Garc{\'i}a-Fi{\~n}ana and Dunbar, {R. I M}",
year = "2012",
month = "6",
day = "7",
doi = "10.1098/rspb.2011.2574",
language = "English",
volume = "279",
pages = "2157--2162",
journal = "Royal Society of London. Philosophical Transactions B. Biological Sciences",
issn = "0962-8436",
publisher = "The Royal Society Publishing",
number = "1736",

}

RIS

TY - JOUR

T1 - Orbital prefrontal cortex volume predicts social network size: An imaging study of individual differences in humans

AU - Powell, Joanne

AU - Lewis, Penelope A.

AU - Roberts, Neil

AU - García-Fiñana, Marta

AU - Dunbar, R. I M

PY - 2012/6/7

Y1 - 2012/6/7

N2 - The social brain hypothesis, an explanation for the unusually large brains of primates, posits that the size of social group typical of a species is directly related to the volume of its neocortex. To test whether this hypothesis also applies at the within-species level, we applied the Cavalieri method of stereology in conjunction with point counting on magnetic resonance images to determine the volume of prefrontal cortex (PFC) subfields, including dorsal and orbital regions. Path analysis in a sample of 40 healthy adult humans revealed a significant linear relationship between orbital (but not dorsal) PFC volume and the size of subjects' social networks that was mediated by individual intentionality (mentalizing) competences. The results support the social brain hypothesis by indicating a relationship between PFC volume and social network size that applies within species, and, more importantly, indicates that the relationship is mediated by social cognitive skills. © 2012 The Royal Society.

AB - The social brain hypothesis, an explanation for the unusually large brains of primates, posits that the size of social group typical of a species is directly related to the volume of its neocortex. To test whether this hypothesis also applies at the within-species level, we applied the Cavalieri method of stereology in conjunction with point counting on magnetic resonance images to determine the volume of prefrontal cortex (PFC) subfields, including dorsal and orbital regions. Path analysis in a sample of 40 healthy adult humans revealed a significant linear relationship between orbital (but not dorsal) PFC volume and the size of subjects' social networks that was mediated by individual intentionality (mentalizing) competences. The results support the social brain hypothesis by indicating a relationship between PFC volume and social network size that applies within species, and, more importantly, indicates that the relationship is mediated by social cognitive skills. © 2012 The Royal Society.

KW - MRI

KW - Prefrontal cortex

KW - Social network

KW - Stereology

U2 - 10.1098/rspb.2011.2574

DO - 10.1098/rspb.2011.2574

M3 - Article

VL - 279

SP - 2157

EP - 2162

JO - Royal Society of London. Philosophical Transactions B. Biological Sciences

T2 - Royal Society of London. Philosophical Transactions B. Biological Sciences

JF - Royal Society of London. Philosophical Transactions B. Biological Sciences

SN - 0962-8436

IS - 1736

ER -