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A human homologue of monkey F5c.

Ferri S, Peeters R, Nelissen K, Vanduffel W, Rizzolatti G, Orban GA - Neuroimage (2015)

Bottom Line: By presenting the two grasping actions (actor, hand) and varying the low level visual characteristics, we localized a putative human homologue of area F5c (phF5c) in the inferior part of precentral sulcus, bilaterally.In contrast to monkey F5c, phF5c is asymmetric, with a right-sided bias, and is activated more strongly during the observation of the later stages of grasping when the hand is close to the object.The latter characteristic might be related to the emergence, in humans, of the capacity to precisely copy motor acts performed by others, and thus imitation.

View Article: PubMed Central - PubMed

Affiliation: Department of Neuroscience, University of Parma, Parma, Italy.

No MeSH data available.


Related in: MedlinePlus

Experiment S3: Eye position of a representative subject during single runs with a fixation point (left position) (a, c) and without (b, d). Eye position is plotted for the 72 s (3 blocks) of each experimental condition and superimposed on a frame of the person-acting conditions (a, b) but not the other conditions (c, d). Although many more saccades were made when the fixation point was absent (b), the number of saccades did not differ significantly between conditions for the group of subjects: F4,4 = 0.08, p > 0.90.
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f0010: Experiment S3: Eye position of a representative subject during single runs with a fixation point (left position) (a, c) and without (b, d). Eye position is plotted for the 72 s (3 blocks) of each experimental condition and superimposed on a frame of the person-acting conditions (a, b) but not the other conditions (c, d). Although many more saccades were made when the fixation point was absent (b), the number of saccades did not differ significantly between conditions for the group of subjects: F4,4 = 0.08, p > 0.90.

Mentions: In all but some specific runs of Supplementary experiment 3, subjects (humans or monkeys) had to fixate a red point located in the center of the screen, indicated in Fig. 1. Eye recordings indicated that human subjects fixated well (Figs. 2a, c) and averaged 6–14 saccades/min in the various experiments (Table 2). Monkeys made between 6 and 9 saccades/min in Experiment 2. One-way repeated measures ANOVAs testing for differences in number of saccades between conditions revealed no significant differences in any of the human experiments (groups of subjects) or in Experiment 2 (individual subjects, Table 2).


A human homologue of monkey F5c.

Ferri S, Peeters R, Nelissen K, Vanduffel W, Rizzolatti G, Orban GA - Neuroimage (2015)

Experiment S3: Eye position of a representative subject during single runs with a fixation point (left position) (a, c) and without (b, d). Eye position is plotted for the 72 s (3 blocks) of each experimental condition and superimposed on a frame of the person-acting conditions (a, b) but not the other conditions (c, d). Although many more saccades were made when the fixation point was absent (b), the number of saccades did not differ significantly between conditions for the group of subjects: F4,4 = 0.08, p > 0.90.
© Copyright Policy - CC BY-NC-ND
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4401441&req=5

f0010: Experiment S3: Eye position of a representative subject during single runs with a fixation point (left position) (a, c) and without (b, d). Eye position is plotted for the 72 s (3 blocks) of each experimental condition and superimposed on a frame of the person-acting conditions (a, b) but not the other conditions (c, d). Although many more saccades were made when the fixation point was absent (b), the number of saccades did not differ significantly between conditions for the group of subjects: F4,4 = 0.08, p > 0.90.
Mentions: In all but some specific runs of Supplementary experiment 3, subjects (humans or monkeys) had to fixate a red point located in the center of the screen, indicated in Fig. 1. Eye recordings indicated that human subjects fixated well (Figs. 2a, c) and averaged 6–14 saccades/min in the various experiments (Table 2). Monkeys made between 6 and 9 saccades/min in Experiment 2. One-way repeated measures ANOVAs testing for differences in number of saccades between conditions revealed no significant differences in any of the human experiments (groups of subjects) or in Experiment 2 (individual subjects, Table 2).

Bottom Line: By presenting the two grasping actions (actor, hand) and varying the low level visual characteristics, we localized a putative human homologue of area F5c (phF5c) in the inferior part of precentral sulcus, bilaterally.In contrast to monkey F5c, phF5c is asymmetric, with a right-sided bias, and is activated more strongly during the observation of the later stages of grasping when the hand is close to the object.The latter characteristic might be related to the emergence, in humans, of the capacity to precisely copy motor acts performed by others, and thus imitation.

View Article: PubMed Central - PubMed

Affiliation: Department of Neuroscience, University of Parma, Parma, Italy.

No MeSH data available.


Related in: MedlinePlus