Functional Magnetic Resonance Imaging Study on the Role of Awareness in Visual Perception in Healthy Adult Subjects.

Magnetic Resonance Clinical Trial

Official title:

Functional Magnetic Resonance Imaging Study on the Role of Awareness in Visual Perception in Healthy Adult Subjects.

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT06183775
• Other study ID #: VISCON-01
• Status: Completed
• Start date: November 6, 2017
• Est. completion date: May 4, 2019

Study information

• Verified date: December 2023
• Source: IRCCS San Raffaele
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

The objective of the study concerns the investigation of the role of awareness in visual perception, highlighting the brain systems involved during non-processing Aware of stimuli belonging to different semantic categories. Specifically, the theoretical perspective of reference is that of the so-called "grounded cognition", according to which the representation of the concepts of semantic knowledge is conveyed by information sensorimotor and affective, introspective and social states. The main objective is therefore to evaluate whether the meaning of the stimulus can be extracted in the absence of awareness, investigating the neural response in the brain regions known to be involved in the conscious processing of stimuli belonging to the semantic categories in question.

To this end, two different experimental paradigms were implemented. A first paradigm aimed at investigating the unconscious representation of semantic knowledge in the context of language, therefore using visual stimuli in lexical mode (words). A second paradigm aimed at investigating the same phenomena in the field of visual perception of objects in space, using stimuli in iconic mode (images).

Recruitment information / eligibility

• Status: Completed
• Enrollment: 62
• Est. completion date: May 4, 2019
• Est. primary completion date: May 4, 2019
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 20 Years to 65 Years

Eligibility

Inclusion Criteria:

• aged between 20 and 65;

• Italian mother tongue.

Exclusion Criteria:

• clinical evidence of significant psychiatric or systemic neurological pathologies.

Related Conditions & MeSH terms

• Magnetic Resonance

Locations

Country	Name	City	State
Italy	Irccs San Raffaele	Milano

Sponsors (1)

Lead Sponsor	Collaborator
IRCCS San Raffaele

Country where clinical trial is conducted

Italy, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Magnetic resonance imaging for 62 healthy volunteers for measure the role of consciousness in visual perception.	The role of consciousness in visual perception, highlighting the brain areas involved during the processing of stimuli belonging to different semantic categories.	2 years