Prehension in Cebus and Saimiri: I. Grip type and hand preference

  title={Prehension in Cebus and Saimiri: I. Grip type and hand preference},
  author={Michael B. Costello and Dorothy Munkenbeck Fragaszy},
  journal={American Journal of Primatology},
Prehension was examined in tufted capuchins (Cebus apella) and squirrel monkeys (Saimiri sciureus). Individual subjects were videotaped from frontal and sagittal planes while they grasped small objects presented in several ways (in view, out of view, embedded, moving). Capuchins used a precision grip in 30% of trials and in more than half of trials with stationary objects. Most (54%) of the precision grips used were opposition of the thumb to the index finger; however, eight other forms were… 
Grasping behavior in tufted capuchin monkeys (Cebus apella): grip types and manual laterality for picking up a small food item.
Analysis of prehension in 20 tufted capuchins in a reaching task requiring individuals to grasp a small food item fixed to a tray revealed that precision grips were as efficient as power grips; for precision grips, the left hand was faster than the right hand; and for power grips, both hands were equally quick.
Manual Function in Cebus apella. Digital Mobility, Preshaping, and Endurance in Repetitive Grasping
It is concluded that precise finger coordination is more effortful and less well coordinated, and the coordination is less lateralized, in capuchins than in catarrhine primates.
Versatile grasping ability in power-grip actions by tufted capuchin monkeys (Sapajus spp.).
Findings clarify the extent to which manual dexterity and cognitive abilities can be expressed in the grasping tasks of highly manually skilled primate species.
Compound grips in tufted capuchin monkeys (Sapajus spp and Sapajus libidinosus)
It is predicted that any primate species that exhibits precision grips and independent digit movement can perform compound grips, and whether and how tufted capuchin monkeys use onehand to hold one or more objects with multiple grips (compound grips) is predicted.
Grip preference, dermatoglyphics, and hand use in captive chimpanzees (Pan troglodytes).
The results indicated that chimpanzees exhibit significantly more thumb-index responses for the right compared to the left hand, and fingerprint patterns were more prevalent for subjects that had a whorl compared to a loop or arch on their thumb.
Object grasping and manipulation in capuchin monkeys (genera Cebus and Sapajus)
The aim of this work is to provide an overview of current knowledge on the ability of capuchins to grasp and manipulate objects, with a special focus on how these species express their cognitive potential through manual behaviour.
Hand preferences of captive chimpanzees (Pan troglodytes) in simple reaching for food
A developmental shift in hand preference and manipulative patterns is demonstrated and functional asymmetries between the right and the left hand in Pan troglodytes are revealed.
Precision grips in young chimpanzees
Evidence is provided that young chimpanzees preferentially use a true precision grip to prehend small and very small objects.


Preliminary quantitative studies of prehension in squirrel monkeys (Saimiri sciureus).
Three-dimensional analyses indicated that general aspects of prehension do not vary grossly across individuals nor as a function of the object to be prehended, at least at the level of measurement used in these studies.
The prehensile movements of the human hand.
  • J. Napier
  • Psychology
    The Journal of bone and joint surgery. British volume
  • 1956
It is shown that movements of the hand consist of two basic patterns of movements which are termed precision grip and power grip, which appear to cover the whole range of prehensile activity of the human hand.
The manufacture and use of tools by capuchin monkeys (Cebus apella).
The manufacture and use of tools in captive groups of tufted capuchin monkeys (Cebus apella) are described, providing further evidence that capuchins possess extensive manipulative propensities and emphasize the significance of the normal social environment in the full expression of these propensity.
The Role of the Corticospinal Tract in the Evolution of Human Digital Dexterity
A comparative analysis suggests that two changes took place early in Primate evolution: a reduction in functional distance between neocortex and spinal motor neurons innervating the digits, and an extension of direct neocortical influence beyond the cervical segments of the spinal cord.
Handedness and laterality in humans and other animals
A survey of the developmental, genetic, paleoneurological, comparative behavior, and neuropsychological evidence indicates that the neural organization responsible for handedness and laterality in
Deviation and laterality of hand preference in monkeys.
  • J. C. Beck, R. L. Barton
  • Psychology, Biology
    Cortex; a journal devoted to the study of the nervous system and behavior
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The Natural History Of The Primates
This natural history, written in a clear and lively fashion by two distinguished primatologists, provides a basic, fully illustrated introduction to the order of primates.
Use of a club by a wild white‐faced capuchin (Cebus capucinus) to attack a venomous snake (Bothrops asper)
  • S. Boinski
  • Biology
    American journal of primatology
  • 1988
In Parque Nacional Manuel Antonio, Costa Rica, an adult male Cebus capucinus was observed repeatedly hitting a venomous snake (Bothropsasper) with a branch. Initially a large dead branch overhanging