Limits...
Monkeys monitor human goals in a nonmatch-to-goal interactive task.

Falcone R, Brunamonti E, Ferraina S, Genovesio A - PLoS ONE (2012)

Bottom Line: In this task the monkeys were required to choose one of two targets, from a list of three.We found that monkeys were very skillful in monitoring goals, not only of their own choice by also those of their human partner.They showed also a surprising ability to coordinate their actions, taking turns with the human partner, starting and stopping their own turn following the decision of the human partner in the task.

View Article: PubMed Central - PubMed

Affiliation: Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy.

ABSTRACT
We designed a new task, called nonmatch-to-goal, to study the ability of macaque monkeys to interact with humans in a rule-guided paradigm. In this task the monkeys were required to choose one of two targets, from a list of three. For each choice, they were required to switch from their choice on the previous trial to a different one. In a subset of trials the monkeys observed a human partner performing the task. When the human concluded his turn, the monkeys were required to switch to a new goal discarding the human's previous goal. We found that monkeys were very skillful in monitoring goals, not only of their own choice by also those of their human partner. They showed also a surprising ability to coordinate their actions, taking turns with the human partner, starting and stopping their own turn following the decision of the human partner in the task.

Show MeSH

Related in: MedlinePlus

Experimental design.A. Sequence of task events in a trial. Each black rectangle represents the video screen. The white circle illustrates the central stimulus, the grey horizontal bar is the go cue. The green cross and the purple polygon are the two potential response goals. In this example trial, that could represent the first trial of a session, the response decision (highlighted by the braked rectangle) is toward the purple polygon. We used three potential goals in a session: a purple polygon, a green cross and a blue circle B. In this example sequence of trials, the previous goal was the purple polygon (left yellow box, as in the trial in A). The same goal was, by task design, presented again in the current trial (right green box), together with another potential future goal, which was either: 1) the familiar goal that was the goal discarded in the previous trial (green cross); or 2) the unfamiliar goal that was not presented in the previous trial (blue circle). C. Example sequence of trials with the human partner interacting with the monkey. Numbers indicate the trial position after the trial in A. Each panel represents the response choice. The correct goal (response) was always the goal that differed from the previous goal acquired either by the human agent in the interactive condition or by the monkey in the noninteractive condition. In the human trials the monkeys were required only to monitor the human partner choices. Notice that in this example sequence monkeys in trial number 5 could not choose the purple polygon based on what was their own previous choice (the purple polygon in trial 2), they had instead to choose a goal based on what the human partner chose in trial 4, that was the blue circle.
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3285654&req=5

pone-0032209-g001: Experimental design.A. Sequence of task events in a trial. Each black rectangle represents the video screen. The white circle illustrates the central stimulus, the grey horizontal bar is the go cue. The green cross and the purple polygon are the two potential response goals. In this example trial, that could represent the first trial of a session, the response decision (highlighted by the braked rectangle) is toward the purple polygon. We used three potential goals in a session: a purple polygon, a green cross and a blue circle B. In this example sequence of trials, the previous goal was the purple polygon (left yellow box, as in the trial in A). The same goal was, by task design, presented again in the current trial (right green box), together with another potential future goal, which was either: 1) the familiar goal that was the goal discarded in the previous trial (green cross); or 2) the unfamiliar goal that was not presented in the previous trial (blue circle). C. Example sequence of trials with the human partner interacting with the monkey. Numbers indicate the trial position after the trial in A. Each panel represents the response choice. The correct goal (response) was always the goal that differed from the previous goal acquired either by the human agent in the interactive condition or by the monkey in the noninteractive condition. In the human trials the monkeys were required only to monitor the human partner choices. Notice that in this example sequence monkeys in trial number 5 could not choose the purple polygon based on what was their own previous choice (the purple polygon in trial 2), they had instead to choose a goal based on what the human partner chose in trial 4, that was the blue circle.

Mentions: Figure 1A shows the sequence of events in the NMTG task. The trial began when a white circle, the central stimulus, appeared at the center of the video screen (Fig. 1A).


Monkeys monitor human goals in a nonmatch-to-goal interactive task.

Falcone R, Brunamonti E, Ferraina S, Genovesio A - PLoS ONE (2012)

Experimental design.A. Sequence of task events in a trial. Each black rectangle represents the video screen. The white circle illustrates the central stimulus, the grey horizontal bar is the go cue. The green cross and the purple polygon are the two potential response goals. In this example trial, that could represent the first trial of a session, the response decision (highlighted by the braked rectangle) is toward the purple polygon. We used three potential goals in a session: a purple polygon, a green cross and a blue circle B. In this example sequence of trials, the previous goal was the purple polygon (left yellow box, as in the trial in A). The same goal was, by task design, presented again in the current trial (right green box), together with another potential future goal, which was either: 1) the familiar goal that was the goal discarded in the previous trial (green cross); or 2) the unfamiliar goal that was not presented in the previous trial (blue circle). C. Example sequence of trials with the human partner interacting with the monkey. Numbers indicate the trial position after the trial in A. Each panel represents the response choice. The correct goal (response) was always the goal that differed from the previous goal acquired either by the human agent in the interactive condition or by the monkey in the noninteractive condition. In the human trials the monkeys were required only to monitor the human partner choices. Notice that in this example sequence monkeys in trial number 5 could not choose the purple polygon based on what was their own previous choice (the purple polygon in trial 2), they had instead to choose a goal based on what the human partner chose in trial 4, that was the blue circle.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3285654&req=5

pone-0032209-g001: Experimental design.A. Sequence of task events in a trial. Each black rectangle represents the video screen. The white circle illustrates the central stimulus, the grey horizontal bar is the go cue. The green cross and the purple polygon are the two potential response goals. In this example trial, that could represent the first trial of a session, the response decision (highlighted by the braked rectangle) is toward the purple polygon. We used three potential goals in a session: a purple polygon, a green cross and a blue circle B. In this example sequence of trials, the previous goal was the purple polygon (left yellow box, as in the trial in A). The same goal was, by task design, presented again in the current trial (right green box), together with another potential future goal, which was either: 1) the familiar goal that was the goal discarded in the previous trial (green cross); or 2) the unfamiliar goal that was not presented in the previous trial (blue circle). C. Example sequence of trials with the human partner interacting with the monkey. Numbers indicate the trial position after the trial in A. Each panel represents the response choice. The correct goal (response) was always the goal that differed from the previous goal acquired either by the human agent in the interactive condition or by the monkey in the noninteractive condition. In the human trials the monkeys were required only to monitor the human partner choices. Notice that in this example sequence monkeys in trial number 5 could not choose the purple polygon based on what was their own previous choice (the purple polygon in trial 2), they had instead to choose a goal based on what the human partner chose in trial 4, that was the blue circle.
Mentions: Figure 1A shows the sequence of events in the NMTG task. The trial began when a white circle, the central stimulus, appeared at the center of the video screen (Fig. 1A).

Bottom Line: In this task the monkeys were required to choose one of two targets, from a list of three.We found that monkeys were very skillful in monitoring goals, not only of their own choice by also those of their human partner.They showed also a surprising ability to coordinate their actions, taking turns with the human partner, starting and stopping their own turn following the decision of the human partner in the task.

View Article: PubMed Central - PubMed

Affiliation: Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy.

ABSTRACT
We designed a new task, called nonmatch-to-goal, to study the ability of macaque monkeys to interact with humans in a rule-guided paradigm. In this task the monkeys were required to choose one of two targets, from a list of three. For each choice, they were required to switch from their choice on the previous trial to a different one. In a subset of trials the monkeys observed a human partner performing the task. When the human concluded his turn, the monkeys were required to switch to a new goal discarding the human's previous goal. We found that monkeys were very skillful in monitoring goals, not only of their own choice by also those of their human partner. They showed also a surprising ability to coordinate their actions, taking turns with the human partner, starting and stopping their own turn following the decision of the human partner in the task.

Show MeSH
Related in: MedlinePlus