A mentalist framework for linguistic and extralinguistic communication

We outline some components of a mentalist theory of human communicative competence. Communication in our species is an intentional and overt type of social interaction, based on each agent's capability of entertaining shared mental states and of acting so as to make certain mental states shared with the other. Communicative meaning is a matter of ascription: it is not an intrinsic property of a communicative act, but is instead created here and now as the shared construction of the interlocutors. We then discuss how communicative actions are superficially realized by our species, focusing in particular on the difference between linguistic and extralinguistic (that is, gestural) means of expression. Linguistic communication is the communicative use of a symbol system, whereas extralinguistic communication is the communicative use of a set of symbols. The difference turns out to be a matter of processing rather than of intrinsic structure

Intentional Minds: A Philosophical Analysis of Intention Tested through fMRI Experiments Involving People with Schizophrenia, People with Autism, and Healthy Individuals

In this paper we show how we empirically tested one of the most relevant topics in philosophy of mind through a series of fMRI experiments: the classification of different types of intention. To this aim, firstly we trace a theoretical distinction among private, prospective, and communicative intentions. Second, we propose a set of predictions concerning the recognition of these three types of intention in healthy individuals, and we report the experimental results corroborating our theoretical model of intention. Third, we derive from our model predictions relevant for the domain of psychopathological functioning. In particular, we treat the cases of both hyper-intentionality (as in paranoid schizophrenia) and hypo-intentionality (as in autistic spectrum disorders). Our conclusion is that the theoretical model of intention we propose contributes to enlarge our knowledge on the neurobiological bases of intention processing, in both healthy people and in people with impairments to the neurocognitive system that underlies intention recognition

Neuropragmatics: Extralinguistic communication after closed head injury

This work is concerned with the decay of communicative abilities after head trauma. A protocol composed of 16 videotaped scenes was devised in order to investigate the comprehension of several types of communicative actions realized with extralinguistic means, like pointing or clapping. The protocol was administered to 30 closed head injured individuals. The results showed a decreasing performance from simple standard acts, to complex standard acts, deceits, and ironies. The subjects' performance was worse with the scenes reproducing failing, rather than successful, communicative actions. The results are compared with those we previously obtained with a linguistic protocol. A theory of the cognitive processes underlying intentional communication is outlined and used to explain the results

Effective connectivity gateways to the Theory of Mind network in processing communicative intention

An Intention Processing Network (IPN), involving the medial prefrontal cortex, precuneus, bilateral posterior superior temporal sulcus, and temporoparietal junctions, plays a fundamental role in comprehending intentions underlying action goals. In a previous fMRI study, we showed that, depending on the linguistic or extralinguistic (gestural) modality used to convey the intention, the IPN is complemented by activation of additional brain areas, reflecting distinct modality-specific input gateways to the IPN. These areas involve, for the linguistic modality, the left inferior frontal gyrus (LIFG), and for the extralinguistic modality, the right inferior frontal gyrus (RIFG). Here, we tested the modality-specific gateway hypothesis, by using DCM to measure inter-regional functional integration dynamics between the IPN and LIFG/RIFG gateways. We found strong evidence of a well-defined effective connectivity architecture mediating the functional integration between the IPN and the inferior frontal cortices. The connectivity dynamics indicate a modality-specific propagation of stimulus information from LIFG to IPN for the linguistic modality, and from RIFG to IPN for the extralinguistic modality. Thus, we suggest a functional model in which the modality-specific gateways mediate the structural and semantic decoding of the stimuli, and allow for the modality-specific communicative information to be integrated in Theory of Mind inferences elaborated through the IPN

Rehabilitation of Communicative Abilities in Patients with a History of TBI: Behavioral Improvements and Cerebral Changes in Resting-State Activity

A targeted training program for the rehabilitation of communicative abilities—Cognitive Pragmatic Treatment (CPT)—has been developed and previously tested on a sample of patients with traumatic brain injury (TBI), whose performance was found to have improved. Since cortical plasticity has been recognized as the main mechanism of functional recovery, we investigated whether and how behavioral improvements following the training program are accompanied by brain modifications. Eight TBI patients took part in the training program and were behaviorally assessed pre- and post-treatment; six of these patients were also evaluated with pre- and post-treatment resting state (rs) functional magnetic resonance imaging (fMRI). At the end of the rehabilitation program patients showed improvement in overall communicative performance, in both comprehension and production tasks. A follow-up retest revealed the stability of these results 3 months after completing the training program. At the brain level, we found significant increases in the amplitude of low frequency fluctuation (ALFF) index in the bilateral precentral gyrus, in the right middle and superior temporal gyri, in the right cingulate gyrus, and in the left inferior parietal lobule. We discuss these differences of brain activity in terms of their possible contribution to promoting recovery

Schizophrenia and Autism as Contrasting Minds: Neural Evidence for the Hypo-Hyper-Intentionality Hypothesis

Both schizophrenia (SCZ) and autism spectrum disorder (ASD) are characterized by mentalizing problems and associated neural dysfunction of the social brain. However, the deficits in mental state attribution are somehow opposed: Whereas patients with SCZ tend to over-attribute intentions to agents and physical events ("hyper-intentionality”), patients with autism treat people as devoid of intentions ("hypo-intentionality”). Here we aimed to investigate whether this hypo-hyper-intentionality hypothesis can be supported by neural evidence during a mentalizing task. Using functional magnetic resonance imaging (fMRI), we investigated the neural responses and functional connectivity during reading others intention. Scanning was performed in 23 individuals with ASD, 18 with paranoid SCZ and 23 gender and IQ matched control subjects. Both clinical groups showed reduced brain activation compared to controls for the contrast intentional vs physical information processing in left posterior superior temporal sulcus (pSTS) and ventral medial prefrontal cortex (vMPFC) for SCZ, and right pSTS in ASD. As predicted, these effects were caused in a group specific way: Relative increased activation for physical information processing in SCZ that was also correlated with positive PANNS score and relative decreased activation for intentional information processing in ASD. Additionally, we could demonstrate opposed connectivity patterns between the right pSTS and vMPFC in the clinical groups, ie, increased for SCZ, decreased for ASD. These findings represent opposed neural signatures in key regions of the social brain as predicted by the hyper-hypo-intentionality hypothesi

Towards a Model of the Interplay of Mentalizing and Mirroring in Embodied Communication

Kahl S, Kopp S. Towards a Model of the Interplay of Mentalizing and Mirroring in Embodied Communication. In: Airenti G, Bara BG, Sandini G, eds. Proceedings of the EuroAsianPacific Joint Conference on Cognitive Science. CEUR Workshop Proceedings. Vol 1419. CEUR-WS.org; 2015: 300-305

Communicative Interactions Improve Visual Detection of Biological Motion

BACKGROUND: In the context of interacting activities requiring close-body contact such as fighting or dancing, the actions of one agent can be used to predict the actions of the second agent. In the present study, we investigated whether interpersonal predictive coding extends to interactive activities--such as communicative interactions--in which no physical contingency is implied between the movements of the interacting individuals. METHODOLOGY/PRINCIPAL FINDINGS: Participants observed point-light displays of two agents (A and B) performing separate actions. In the communicative condition, the action performed by agent B responded to a communicative gesture performed by agent A. In the individual condition, agent A's communicative action was substituted with a non-communicative action. Using a simultaneous masking detection task, we demonstrate that observing the communicative gesture performed by agent A enhanced visual discrimination of agent B. CONCLUSIONS/SIGNIFICANCE: Our finding complements and extends previous evidence for interpersonal predictive coding, suggesting that the communicative gestures of one agent can serve as a predictor for the expected actions of the respondent, even if no physical contact between agents is implied

ABaCo: Assessment Battery for Communication

\ud Human communication is\ud one of the most complex social\ud activity: it is a process of meaning\ud construction which cooperatively\ud involves all participants taking\ud part in the interaction. Various\ud clinical conditions may lead to\ud impairments of communicative\ud abilities: developmental disorders\ud (e.g., autism, specific language\ud impairment, Down syndrome),\ud brain pathologies (e.g., closed\ud head injury, right hemisphere\ud damage, aphasia), psychiatric disorders\ud (schizophrenia), disorders\ud of old age (e.g. dementia). The\ud assessment of a patient’s abilities\ud and disabilities is the crucial starting\ud point for planning an efficient\ud rehabilitation path, where\ud residual capacities are strengthen\ud and, whenever possible, impaired\ud components are restored. However,\ud while the phonological,\ud syntactic and semantic components\ud of language can be assessed\ud by numerous tests, instruments\ud for the evaluation of pragmatic\ud aspects of communication are\ud scarce (see Sacco et al., 2008 for a\ud more detailed analysis of the existing\ud instruments for the assessment\ud of communication).\ud The Assessment Battery for\ud Communication (ABaCo) has\ud been created to be a theoretically\ud grounded, wide-range clinical\ud instrument. Its theoretical bases\ud stem from Cognitive Pragmatics\ud theory (Airenti, Bara & Colombetti,\ud 1993; Bara, 2010), a theory of\ud the cognitive processes underlying\ud human communicative exchanges,\ud framed within the inferential\ud model of communication (Grice,\ud 1975) and the speech acts perspective\ud (Austin, 1962; Searle, 1969).\ud The theory has been shown to\ud be able to make predictions on\ud typically developing children (Bucciarelli,\ud Colle & Bara, 2003; Bosco,\ud Bucciarelli & Bara, 2004; 2006;\ud Bosco & Buciarelli, 2008; Bosco,\ud Vallana & Bucciarelli, 2012), atypically\ud developing children (Bara,\ud Bosco & Bucciarelli, 1999; Bara,\ud Bucciarelli & Colle, 2001; De\ud Marco, Colle & Bucciarelli, 2007),\ud patients with traumatic brain injury\ud (Bara, Tirassa & Zettin, 1997;\ud Bara, Cutica & Tirassa, 2001; Angeleri\ud et al., 2008), patients with right\ud and left focal brain lesions (Cutica,\ud Bucciarelli & Bara, 2006), patients\ud with Alzheimer’s disease (Bara,\ud Bucciarelli & Geminiani, 2000)\ud and patients with schizophrenia\ud (Bosco, Bono & Bara, 2012). In\ud this view, communication is the\ud ability to comprehend and produce\ud linguistic and extralinguistic\ud communication acts, accompanied\ud by suitable paralinguistic features,\ud appropriate with respect to discourse\ud and social norms, and fluently\ud integrated within the conversation.\ud The ABaCo assesses each of\ud these components, encompassing\ud the major aspects involved in communication.\ud In this paper, we will\ud briefly describe the features of the\ud battery, and summarize its psychometric\ud properties, providing some\ud suggestions for clinical application