A real-time 3D video tracking system for monitoring primate groups

Ballesta, Sébastien; Reymond, Gilles; Pozzobon, M.; Duhamel, Jean‐René

doi:10.1016/j.jneumeth.2014.05.022

Cited by 41 publications

(48 citation statements)

References 22 publications

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“…Social organization and affiliative behavior patterns of the four long-tailed macaques were assessed using manual and automatic scoring of their spontaneous interactions (30). (Fig.…”

Section: Resultsmentioning

confidence: 99%

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Rudimentary empathy in macaques’ social decision-making

Ballesta

Duhamel

2015

Proc. Natl. Acad. Sci. U.S.A.

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Primates live in highly social environments, where prosocial behaviors promote social bonds and cohesion and contribute to group members' fitness. Despite a growing interest in the biological basis of nonhuman primates' social interactions, their underlying motivations remain a matter of debate. We report that macaque monkeys take into account the welfare of their peers when making behavioral choices bringing about pleasant or unpleasant outcomes to a monkey partner. Two macaques took turns in making decisions that could impact their own welfare or their partner's. Most monkeys were inclined to refrain from delivering a mildly aversive airpuff and to grant juice rewards to their partner. Choice consistency between these two types of outcome suggests that monkeys display coherent motivations in different social interactions. Furthermore, spontaneous affilitative group interactions in the home environment were mostly consistent with the measured social decisions, thus emphasizing the impact of preexisting social bonds on decision-making. Interestingly, unique behavioral markers predicted these decisions: benevolence was associated with enhanced mutual gaze and empathic eye blinking, whereas indifference or malevolence was associated with lower or suppressed such responses. Together our results suggest that prosocial decision-making is sustained by an intrinsic motivation for social affiliation and controlled through positive and negative vicarious reinforcements.social neuroscience | emotions | social gaze | eye blink | prosocial

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“…Social organization and affiliative behavior patterns of the four long-tailed macaques were assessed using manual and automatic scoring of their spontaneous interactions (30). (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The social status and interaction patterns of the long-tailed macaques were characterized by both manual and automated ethological measures using a customdesigned multicamera 3D tracking system (30) (Fig. 5A and Fig.…”

Section: Methodsmentioning

confidence: 99%

Rudimentary empathy in macaques’ social decision-making

Ballesta

Duhamel

2015

Proc. Natl. Acad. Sci. U.S.A.

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“…When using systems based on physical markers (active LEDs or passive reflectors), rhesus monkeys tend to rip off the markers attached to their body. An alternative are fluorescent or reflective markers directly painted to the skin of the animal (Courtine et al, 2005;Peikon, Fitzsimmons, Lebedev, & Nicolelis, 2009), which also require continuously repeated shaving, or markers that cannot be removed, such as collars (Ballesta, Reymond, Pozzobon, & Duhamel, 2014). A videobased marker-free system using skeleton models was recently reported (Nakamura et al, 2016), however, this or similar systems were not yet reported in a larger, more complex environment with monkeys.…”

Section: Structured Behavior In the Reach Cage With Macaquementioning

confidence: 99%

Wireless recording from unrestrained monkeys reveals motor goal encoding beyond immediate reach in frontoparietal cortex

Berger

Agha

Gail

2018

Preprint

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AbstractSystem neuroscience of motor cognition regarding the space beyond immediate reach mandates free, yet experimentally controlled movements. We present an experimental environment (Reach Cage) and a versatile visuo-haptic interaction system (MaCaQuE) for investigating goal-directed whole-body movements of unrestrained monkeys. Two rhesus monkeys conducted instructed walk-and-reach movements towards targets flexibly positioned in the cage. We tracked 3D multi-joint arm and head movements using markerless motion capture. Movements show small trial-to-trial variability despite being unrestrained. We wirelessly recorded 192 broad-band neural signals from three cortical sensorimotor areas simultaneously. Single unit activity is selective for different reach and walk-and-reach movements. Walk-and-reach targets could be decoded from premotor and parietal but not motor cortical activity during movement planning. The Reach Cage allows systems-level sensorimotor neuroscience studies with full-body movements in a configurable 3D spatial setting with unrestrained monkeys. We conclude that the primate frontoparietal network encodes reach goals beyond immediate reach during movement planning.

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“…Their goal was making the algorithm more robust in various scenarios. A real-time 3D video tracking system for monitoring primate groups was presented in [9]. They used 4 CMOS color cameras to monitor up to 4 animals in one cage.…”

Section: Related Workmentioning

confidence: 99%