An fMRI Study of the Effects of Psychostimulants on Default-Mode Processing During Stroop Task Performance in Youths with ADHD

An fMRI Study of the Effects of Psychostimulants on Default-Mode Processing During Stroop Task Performance in Youths with ADHD is a work by Bradley S. Peterson (2009).

Core claims

• Peterson and colleagues demonstrate that psychostimulant medication normalizes default-mode network (DMN) activity in youths with ADHD during cognitive task performance, showing that the core deficit in ADHD involves the failure to suppress self-referential processing when external task demands require focused attention.
• The paper provides early neuroimaging evidence that the default-mode network — the brain system responsible for self-referential thought, mind-wandering, and narrative self-construction — is not merely a resting-state phenomenon but an active competitor for attentional resources that must be regulated for adaptive functioning.
• By showing that psychostimulants restore the normative pattern of DMN suppression during cognitive demands, the paper bridges pharmacology and network neuroscience, offering a mechanistic account of how medication produces its clinical effects in ADHD.

Related questions

• Does the DMN suppression model of ADHD medication illuminate the depth psychological question of how the ego manages its relationship to the unconscious — is normative DMN suppression the neural correlate of what Jungian psychology calls a differentiated ego that can direct attention without being flooded by autonomous complexes?
• How does the paper’s model of DMN as a competitor for attentional resources relate to Jung’s concept of the complex — an autonomous psychic content that intrudes upon directed thinking and disrupts ego-functioning in ways that parallel the ADHD presentation?

See also

• Library page: /library/the-psyche/peterson-fmri-psychostimulants-default-mode/

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