Longitudinal stability of individual brain plasticity patterns in blindness.

Area of Science:

• Neuroscience
• Neuroplasticity
• Sensory Substitution

Background:

• The primary visual cortex (V1) in blindness is recruited for various non-visual tasks like audition and language.
• This raises questions about the stability and individual specificity of V1 functional reorganization.

Purpose of the Study:

• To investigate the temporal stability of individual functional connectivity (FC) patterns in the V1 of congenitally blind individuals.
• To determine if V1 reorganization in blindness is a stable, individual trait or a transient state.

Main Methods:

• Repeatedly sampled functional connectivity (FC) data from congenitally blind individuals over two years.
• Multivoxel pattern analysis (MVPA) to decode participant identity from V1 reorganization patterns.

Main Results:

• Individual V1 functional connectivity (FC) patterns in blind individuals are highly stable over a two-year period.
• Unique reorganization patterns in V1 allow for the decoding of individual participant identity.

Conclusions:

• Reorganized V1 in blindness exhibits stable, individual-specific functional connectivity.
• These stable individual differences suggest a consistent, yet personalized, role for V1 in blindness.
• Stable neuromarkers for V1 reorganization may aid in developing sight rehabilitation and assistive approaches.