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An Action Field Theory of Peripersonal Space
2018
Trends In Cognitive Sciences
Roy J. Bufacchi and Gian Domenico Iannetti
(my very na誰ve view)
Rizzolatti, 1981
The discovery of PPS, monkey single neurons
Bimodal neurons
sensitive to space
immediately around the
animal.
Rizzolatti, 1981
- pericutaneous (54%) neurons (few centimeters)
- distant peripersonal neurons (46%) (reaching distance)
The visual responding regions were spatially related to the tactile fields.
Bimodal neurons sensitive to space immediately around the animal.
Two subfamilies of neurons responding to
both the somatoseonsory and visual stimuli:
Tooth stimulation Visual stimulation
Rizzolatti, 1981
- pericutaneous (54%) neurons (few centimeters)
- distant peripersonal neurons (46%) (reaching distance)
The visual responding regions were spatially related to the tactile fields.
Bimodal neurons sensitive to space immediately around the animal.
Gentilucci, 1988
Observation of an object approaching the somatosenory
receptive field activates the PPS neurons
Approching body outside
the receptive filed
Approching body inside
the receptive field
Graziano, 1994
PPS: representation of space near the body in premotor cortex
Receptive
field
PPS
Modification of visual PPS representation by arm position
Graziano, 1994
PPS: representation of space near the body
PPS: representation of space near the body
Graziano, 1994
Caggiano, 2009
Some neurons encode space in operational terms, changing their
properties according to the possibility that the monkey will interact
with the object
Action observation (mirror) neurons are sensitive to PPS
Bonini, 2014
Canonical
(mostly peri-)
Action observation Object observation
Action observation
Mirror neurons
activated
Object observation
Canonical neurons
activated
Mirror (both
extra- and peri-)
Responses of Ventral Premotor Grasping Neurons to visual stimuli
Object observation mostly in peripersonal space,
Action observation responses were less space-selective.
Bonini, 2014
Canonical
Action observation
Mirror neurons
activated
Object observation
Canonical neurons
activated
Mirror
Responses of Ventral Premotor Grasping Neurons to visual stimuli
Object observation mostly in peripersonal space,
Action observation responses were less space-selective.
Visual-motor task
Space-constrained coding of
objects mostly relies on an
operational (action possibility)
rather than metric (absolute
distance) reference frame.
PPS is an adaptive ability to estimate the probability of interaction
Shaping of behavioral response
What is peripersonal space (PPS)?
Canonical PPS staff
Clery, 2014
Pellegrino, 2015
Ladavas, 2008
Job, 2016
Holmes, 2008
Conflictual:
Use with other action
Nonconflictual:
Use with grasp action
Kalenine, 2016
Costantini, 2011
Wamain, 2016
Cognitive PPS stuff (just imagine!)
PPS is an adaptive ability to estimate the probability of interaction
Shaping of behavioral response
What is peripersonal space (PPS)?
Grivaz, 2017: meta-analysis of PPS-related neuroimaging research
Body ownership (BO)
Working memory is a system responsible for
temporarily holding information available for
processing which has a limited capacity.
What is working memory?What is attention?
Selectively prioritising one part of the perceptional
continuum while deprioritysing the other
The allocation of limited cognitive processing
resources
http://neurosynth.org/
Brozzoli 2011
http://neurosynth.org/
Brozzoli 2011
http://neurosynth.org/
Cisek, P. and Kalaska, J.F. (2010) Neural mechanisms for interacting with a world full of action
choices. Annu. Rev. Neurosci. 33, 269298
Interactive behavior framework
Prieto-frontal network
transforms visual input
into representation of
potential actions
Depending on
environmental
circumstances!
Attention
Working memory
PPS
Population activity in the dorsal premotor cortex during a reach-selection task.
Cisek & Kalaska (2005).
Ability to estimate the
probability of interaction
Shaping behavioral
response
One uniform network for PPS or several specialized for different goals?
De Vignemont and Iannetti, 2015
They poposed a dual model of peripersonal space, based on a clear functional
distinction between bodily protectionand goal-directed action.
Hand blink reflex, HBR task  defensive PPS
Giandomenico Iannetti
Is there a common system or distinctive modality/related systems?
Sambo, 2012
PPS is a set of graded fields describing behavioural
relevance of actions aiming to create or avoid contact
between objects and the body
PSS is NOT a single, distance based dychotomic (in-or-out) zone !
Field here is a quantity that is
somehow distributed over space and
time
Run! AND Climb the tree
(1) PPS-related measures are not binary, but graded with proximity
(2) influenced by factors other than proximity,
(3) different PPS-related responses exist
Run!
Bufacchi 2018 journal_club_short
Motion
dependence
Motion
dependence
Earlier definitions of PPS do not work
Certain distance from the
body
Space of somatosensory-
nonsomatosensory
interaction
Representation of space
surrounding the body
Non-phisiological!
Circular!
Difficult to interpret modifications
and different measures!
PPS-related measures are not binary, but graded with proximity
Influenced by factors other than proximity
Different PPS-related responses exist
PPS is a set of fields of behavioural relevance
My final remark: how to dissociate?
Different overlapping fields
or
One field of probability of interaction
(but different actions are modified by it
differently depending on the context)
We modify one 束 field 損 and probe the others!
for actions related to the physical contact.
Tool use affects multisensory PPS.
Does it change defensive PPS?
Blocked physical contact affects defensive PPS.
Does it affect mutisenory-interaction in the bloked area?
If there is an inter-domain transfer it is likely that responses are
embedded in the general system of prediction of intaraction

More Related Content

Bufacchi 2018 journal_club_short

  • 1. An Action Field Theory of Peripersonal Space 2018 Trends In Cognitive Sciences Roy J. Bufacchi and Gian Domenico Iannetti (my very na誰ve view)
  • 2. Rizzolatti, 1981 The discovery of PPS, monkey single neurons Bimodal neurons sensitive to space immediately around the animal.
  • 3. Rizzolatti, 1981 - pericutaneous (54%) neurons (few centimeters) - distant peripersonal neurons (46%) (reaching distance) The visual responding regions were spatially related to the tactile fields. Bimodal neurons sensitive to space immediately around the animal. Two subfamilies of neurons responding to both the somatoseonsory and visual stimuli:
  • 4. Tooth stimulation Visual stimulation Rizzolatti, 1981 - pericutaneous (54%) neurons (few centimeters) - distant peripersonal neurons (46%) (reaching distance) The visual responding regions were spatially related to the tactile fields. Bimodal neurons sensitive to space immediately around the animal.
  • 5. Gentilucci, 1988 Observation of an object approaching the somatosenory receptive field activates the PPS neurons Approching body outside the receptive filed Approching body inside the receptive field
  • 6. Graziano, 1994 PPS: representation of space near the body in premotor cortex Receptive field PPS Modification of visual PPS representation by arm position
  • 7. Graziano, 1994 PPS: representation of space near the body
  • 8. PPS: representation of space near the body Graziano, 1994
  • 9. Caggiano, 2009 Some neurons encode space in operational terms, changing their properties according to the possibility that the monkey will interact with the object Action observation (mirror) neurons are sensitive to PPS
  • 10. Bonini, 2014 Canonical (mostly peri-) Action observation Object observation Action observation Mirror neurons activated Object observation Canonical neurons activated Mirror (both extra- and peri-) Responses of Ventral Premotor Grasping Neurons to visual stimuli Object observation mostly in peripersonal space, Action observation responses were less space-selective.
  • 11. Bonini, 2014 Canonical Action observation Mirror neurons activated Object observation Canonical neurons activated Mirror Responses of Ventral Premotor Grasping Neurons to visual stimuli Object observation mostly in peripersonal space, Action observation responses were less space-selective. Visual-motor task Space-constrained coding of objects mostly relies on an operational (action possibility) rather than metric (absolute distance) reference frame.
  • 12. PPS is an adaptive ability to estimate the probability of interaction Shaping of behavioral response What is peripersonal space (PPS)?
  • 13. Canonical PPS staff Clery, 2014 Pellegrino, 2015 Ladavas, 2008 Job, 2016 Holmes, 2008
  • 14. Conflictual: Use with other action Nonconflictual: Use with grasp action Kalenine, 2016 Costantini, 2011 Wamain, 2016 Cognitive PPS stuff (just imagine!)
  • 15. PPS is an adaptive ability to estimate the probability of interaction Shaping of behavioral response What is peripersonal space (PPS)? Grivaz, 2017: meta-analysis of PPS-related neuroimaging research Body ownership (BO)
  • 16. Working memory is a system responsible for temporarily holding information available for processing which has a limited capacity. What is working memory?What is attention? Selectively prioritising one part of the perceptional continuum while deprioritysing the other The allocation of limited cognitive processing resources http://neurosynth.org/
  • 19. Cisek, P. and Kalaska, J.F. (2010) Neural mechanisms for interacting with a world full of action choices. Annu. Rev. Neurosci. 33, 269298 Interactive behavior framework Prieto-frontal network transforms visual input into representation of potential actions Depending on environmental circumstances! Attention Working memory PPS
  • 20. Population activity in the dorsal premotor cortex during a reach-selection task. Cisek & Kalaska (2005). Ability to estimate the probability of interaction Shaping behavioral response
  • 21. One uniform network for PPS or several specialized for different goals? De Vignemont and Iannetti, 2015 They poposed a dual model of peripersonal space, based on a clear functional distinction between bodily protectionand goal-directed action.
  • 22. Hand blink reflex, HBR task defensive PPS Giandomenico Iannetti Is there a common system or distinctive modality/related systems? Sambo, 2012 PPS is a set of graded fields describing behavioural relevance of actions aiming to create or avoid contact between objects and the body PSS is NOT a single, distance based dychotomic (in-or-out) zone ! Field here is a quantity that is somehow distributed over space and time
  • 23. Run! AND Climb the tree (1) PPS-related measures are not binary, but graded with proximity (2) influenced by factors other than proximity, (3) different PPS-related responses exist
  • 24. Run!
  • 28. Earlier definitions of PPS do not work Certain distance from the body Space of somatosensory- nonsomatosensory interaction Representation of space surrounding the body Non-phisiological! Circular! Difficult to interpret modifications and different measures!
  • 29. PPS-related measures are not binary, but graded with proximity Influenced by factors other than proximity Different PPS-related responses exist PPS is a set of fields of behavioural relevance My final remark: how to dissociate? Different overlapping fields or One field of probability of interaction (but different actions are modified by it differently depending on the context) We modify one 束 field 損 and probe the others! for actions related to the physical contact.
  • 30. Tool use affects multisensory PPS. Does it change defensive PPS? Blocked physical contact affects defensive PPS. Does it affect mutisenory-interaction in the bloked area? If there is an inter-domain transfer it is likely that responses are embedded in the general system of prediction of intaraction