Journal ArticleDOI
Space coding by premotor cortex.
Leonardo Fogassi,Vittorio Gallese,G. di Pellegrino,Luciano Fadiga,Maurizio Gentilucci,Giuseppe Luppino,Massimo Matelli,Antonio Pedotti,Giacomo Rizzolatti +8 more
Reads0
Chats0
TLDR
Most inferior area 6 visual neurons code the stimulus position in spatial and not in retinal coordinates, which suggests that these visual neurons are involved in generating the stable body-centered frame of reference necesary for programming visually guided movements.Abstract:
Many neurons in inferior area 6, a cortical premotor area, respond to visual stimuli presented in the space around the animal. We were interested to learn whether the receptive fields of these neurons are coded in retinotopic or in body-centered coordinates. To this purpose we recorded single neurons from inferior area 6 (F4 sector) in a monkey trained to fixate a light and detect its dimming. During fixation visual stimuli were moved towards the monkey both within and outside the neurons's receptive field. The fixation point was then moved and the neuron retested with the monkey's gaze deviated to the new location. The results showed that most inferior area 6 visual neurons code the stimulus position in spatial and not in retinal coordinates. It is proposed that these visual neurons are involved in generating the stable body-centered frame of reference necesary for programming visually guided movements.read more
Citations
More filters
Journal ArticleDOI
Action recognition in the premotor cortex
TL;DR: It is proposed that mirror neurons form a system for matching observation and execution of motor actions, similar to that of mirror neurons exists in humans and could be involved in recognition of actions as well as phonetic gestures.
Journal ArticleDOI
The Brain's concepts: the role of the Sensory-motor system in conceptual knowledge
Vittorio Gallese,George Lakoff +1 more
TL;DR: It is proposed that the sensory-motor system has the right kind of structure to characterise both sensory- motor and more abstract concepts, and it is argued against this position using neuroscientific evidence, results from neural computation, and results about the nature of concepts from cognitive linguistics.
Journal ArticleDOI
Space and attention in parietal cortex
TL;DR: Although parietal neurons represent objects in motor coordinates, visual responses are independent of the intention to perform specific motor acts, and the need for a single representation of space in environmental coordinates is eliminated.
Journal ArticleDOI
Polymodal Motion Processing in Posterior Parietal and Premotor Cortex: A Human fMRI Study Strongly Implies Equivalencies between Humans and Monkeys
Frank Bremmer,Frank Bremmer,Anja Schlack,Anja Schlack,N. Jon Shah,Oliver Zafiris,Michael Kubischik,Klaus-Peter Hoffmann,Karl Zilles,Karl Zilles,Gereon R. Fink,Gereon R. Fink +11 more
TL;DR: Functional MRI in normals while presenting moving visual, tactile, or auditory stimuli revealed increased neural activity evoked by all three stimulus modalities in the depth of the intraparietal sulcus, ventral premotor, and lateral inferior postcentral cortex.
Journal ArticleDOI
The Experimental Induction of Out-of-Body Experiences
TL;DR: An illusion in which individuals experience that they are located outside their physical bodies and looking at their bodies from this perspective demonstrates that the experience of being localized within the physical body can be determined by the visual perspective in conjunction with correlated multisensory information from the body.
References
More filters
Journal ArticleDOI
Functional organization of inferior area 6 in the macaque monkey. II. Area F5 and the control of distal movements.
Giacomo Rizzolatti,R. Camarda,Leonardo Fogassi,Maurizio Gentilucci,Giuseppe Luppino,Massimo Matelli +5 more
TL;DR: It is proposed that the different classes of neurons form a vocabulary of motor acts and that this vocabulary can be accessed by somatosensory and visual stimuli.
Journal ArticleDOI
Encoding of spatial location by posterior parietal neurons.
TL;DR: The cortex of the inferior parietal lobule in primates is important for spatial perception and spatially oriented behavior and recordings of single neurons in this area in behaving monkeys showed that the visual sensitivity of the retinotopic receptive fields changes systematically with the angle of gaze.
Journal ArticleDOI
A method for measuring horizontal and vertical eye movement chronically in the monkey.
A F Fuchs,D A Robinson +1 more
TL;DR: Eye movements are measured chronically in the monkey by surgically implanting a coil of fine wire upon the eyeball beneath the bulbar conjunctiva and recti insertions, making it possible to record eye movements conveniently and accurately in the experimental animal in longor short-term experiments on oculomotor function.
Journal ArticleDOI
Functional organization of inferior area 6 in the macaque monkey. I. Somatotopy and the control of proximal movements.
Maurizio Gentilucci,Leonardo Fogassi,Giuseppe Luppino,Massimo Matelli,R. Camarda,Giacomo Rizzolatti +5 more
TL;DR: By combining single neuron recording and intracortical microstimulation, it is found that inferior area 6 is somatotopically organized and argued that the receptive field arrangement and the response properties are more complex in area F4 than in the primary motor cortex.
Journal ArticleDOI
Frontal lobe inputs to primate motor cortex: evidence for four somatotopically organized ‘premotor’ areas
TL;DR: The present experiments sought to define more clearly the origin of frontal lobe inputs to the face, arm and leg areas of the primate motor cortex (area 4) and the distribution of labeled neurons in arhesus monkey with multiple injections of HRP in the arm area of the motor cortex.