Start shallow and grow deep: The development of a Hebrew reading brain

Area of Science:

• Neuroscience
• Developmental Psychology
• Linguistics

Background:

• Brain plasticity shapes reading networks based on orthographic systems.
• Transparent orthographies may involve smaller phonological mappings than opaque ones.
• Neural mechanisms of reading transparent versus opaque scripts remain unclear.

Purpose of the Study:

• To investigate developmental changes in neural correlates of reading transparent (pointed) and opaque (un-pointed) Hebrew words.
• To explore how orthographic transparency influences phonological and orthographic processing during reading acquisition.

Main Methods:

• Examined brain activity in children reading pointed and un-pointed Hebrew words.
• Analyzed developmental changes in the reading network, including inferior frontal gyrus (IFG) and superior temporal gyrus (STG).
• Investigated interactions between word length, diacritics, and brain activation in the visual word form area (VWFA).

Main Results:

• Universal reading development showed increased frontal involvement (IFG) and leftward asymmetry (IFG, STG).
• Developmental increase in STG activation observed, contrasting with prior studies.
• Interaction of word length and diacritics found in STG and VWFA, suggesting adaptation to orthographic transparency.

Conclusions:

• Children adapt reading strategies based on orthographic transparency, using smaller units for transparent scripts and larger units for opaque scripts.
• Phonological abilities consistently correlate with VWFA activation, underscoring phonology's role across transparency levels.
• Findings support multiple-route reading models and highlight the importance of orthographic differences in neural reading models.