Cirillo Emanuele, Zavattaro Claudio, Gammeri Roberto, Serra Hilary, Ricci Raffaella, Berti Anna
Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy.
Brain Sci. 2024 Jun 27;14(7):653. doi: 10.3390/brainsci14070653.
Somatosensory tactile experience is a key aspect of our interaction with the environment. It is involved in object manipulation, in the planning and control of actions and, in its affective components, in the relationships with other individuals. It is also a foundational component of body awareness. An intriguing aspect of sensory perception in general and tactile perception in particular is the way in which stimulation comes to consciousness. Indeed, although being aware of something seems a rather self-evident and monolithic aspect of our mental states, sensory awareness may be in fact modulated by many different processes that impact on the mere stimulation of the skin, including the way in which we perceive our bodies as belonging to us. In this review, we first took into consideration the pathological conditions of absence of phenomenal experience of touch, in the presence of implicit processing, as initial models for understanding the neural bases of conscious tactile experience. Subsequently, we discussed cases of tactile illusions both in normal subjects and in brain-damaged patients which help to understand which high-order processes impact tactile awareness. Finally, we discussed the observations reported in the review in light of some influential models of touch and body representation.
体感触觉体验是我们与环境互动的一个关键方面。它涉及物体操作、动作的计划与控制，以及在其情感成分中，涉及与他人的关系。它也是身体意识的一个基础组成部分。一般感觉知觉，尤其是触觉知觉的一个有趣方面是刺激进入意识的方式。的确，尽管意识到某事物似乎是我们心理状态中一个相当不言而喻且单一的方面，但感觉意识实际上可能受到许多不同过程的调节，这些过程影响着对皮肤的单纯刺激，包括我们将身体视为属于自己的方式。在这篇综述中，我们首先考虑了在存在内隐加工的情况下触觉现象体验缺失的病理状况，将其作为理解有意识触觉体验神经基础的初始模型。随后，我们讨论了正常受试者和脑损伤患者中的触觉错觉案例，这些案例有助于理解哪些高阶过程影响触觉意识。最后，我们根据一些有影响力的触觉和身体表征模型讨论了综述中报告的观察结果。
