Curious monkeys have increased gray matter density in the precuneus

  title={Curious monkeys have increased gray matter density in the precuneus},
  author={Kimberley A. Phillips and Francys Subiaul and Chet C. Sherwood},
  journal={Neuroscience Letters},
Curiosity is a cornerstone of cognition that has the potential to lead to innovations and increase the behavioral repertoire of individuals. A defining characteristic of curiosity is inquisitiveness directed toward novel objects. Species differences in innovative behavior and inquisitiveness have been linked to social complexity and neocortical size [18]. In this study, we observed behavioral actions among nine socially reared and socially housed capuchin monkeys in response to an unfamiliar… Expand
The Psychology and Neuroscience of Curiosity
It is proposed that, rather than worry about defining curiosity, it is more helpful to consider the motivations for information-seeking behavior and to study it in its ethological context. Expand
Orbitofrontal Cortex Uses Distinct Codes for Different Choice Attributes in Decisions Motivated by Curiosity
The results suggest that the predominant role of the OFC is to encode variables relevant for learning, attention, and decision making, rather than integrating them into a single scale of value. Expand
Extraversion and anterior vs. posterior DMN activity during self-referential thoughts
  • G. Knyazev
  • Psychology, Medicine
  • Front. Hum. Neurosci.
  • 2013
It is hypothesized that in extraverts self-referential thoughts may be associated with an increase of spectral power in the posterior DMN hub, whereas in introverts they may beassociated with an increased of spectralPower in the anterior DMNHub. Expand
Functional connectivity mapping of regions associated with self‐ and other‐processing
Initial neurobiological evidence corroborating the increasing claims of an intricate self‐network is presented, the architecture of which may promote social value processing. Expand
Insightful problem solving and emulation in brown capuchin monkeys
It is indicated that capuchins do not spontaneously solve the floating object problem via insight, consistent with some previous results in great ape species and indicate that capuchin monkeys have limited capacity for insightful problem solving. Expand


The precuneus: a review of its functional anatomy and behavioural correlates.
A useful conceptual framework is provided for matching the functional imaging findings with the specific role(s) played by this structure in the higher-order cognitive functions in which it has been implicated, and activation patterns appear to converge with anatomical and connectivity data in providing preliminary evidence for a functional subdivision within the precuneus. Expand
Social intelligence, innovation, and enhanced brain size in primates
  • S. Reader, K. Laland
  • Psychology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 2002
It is established that social learning, innovation, and tool use frequencies are positively correlated with species' relative and absolute “executive” brain volumes, after controlling for phylogeny and research effort. Expand
The Wick in the Candle of Learning
Higher curiosity in an initial session was correlated with better recall of surprising answers 1 to 2 weeks later, which suggests that curiosity may enhance memory for surprising new information. Expand
Neocortex size and behavioural ecology in primates
  • R. Barton
  • Biology, Medicine
  • Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 1996
It is confirmed that neocortex size and social group size are positively correlated once phylogenetic associations and overall brain size are taken into account, and among diurnal haplorhines its size is positively correlated with the degree of frugivory. Expand
The Precuneus and Consciousness
Findings suggest that the precuneus may play a central role in the neural network correlates of consciousness, and its activity seems to correlate with self-reflection processes, possibly involving mental imagery and episodic/autobiographical memory retrieval. Expand
Curiosity in zoo animals.
The reactions of more than 200 zoo animals to a standardized set of novel objects were recorded and quantified. Our results indicated significant differences among various taxonomic groups, both inExpand
A voxel-based morphometric study of ageing in 465 normal adult human brains
Voxel-based-morphometry (VBM) is a whole-brain, unbiased technique for characterizing regional cerebral volume and tissue concentration differences in structural magnetic resonance images. WeExpand
NCS-1 in the Dentate Gyrus Promotes Exploration, Synaptic Plasticity, and Rapid Acquisition of Spatial Memory
A role for NCS-1 and D2R in DG plasticity is demonstrated and insight is provided for understanding how the DG contributes to the origin of exploration and spatial memory acquisition. Expand
Comparison of object manipulation among 74 species of non-human primates
Three groups of primates species were presented with a nylon rope and a wooden cube and their subsequent manipulations were recorded in detail, revealing three groups: lemurs, marmosets, spider monkeys and leaf-eaters; (2) Old World monkeys except leaf-eatingers; and (3) cebus monkeys and apes. Expand
Prey capture efficiency in brown capuchin monkeys (Cebus apella) is influenced by sex and corpus callosum morphology
The results suggest a relationship between prey capture efficiency, sex, and the degree of brain lateralization in capuchins is suggested. Expand