Names #137, #769 · Viṣṇu Sahasranāma
चतुरात्माcaturātmā
Chaturatma — appears 2 times in the stotram, each with its own meaning
Name #137
The fourfold self: waking, dream, sleep, and the beyond
From shloka 15 · chapter Kūrma
लोकाध्यक्षः सुराध्यक्षो धर्माध्यक्षः कृताकृतः ।
चतुरात्मा चतुर्व्यूहश्चतुर्दंष्ट्रश्चतुर्भुजः ॥
lokādhyakṣaḥ surādhyakṣo dharmādhyakṣaḥ kṛtākṛtaḥ
caturātmā caturvyūhaścaturdaṃṣṭraścaturbhujaḥ
Also in this shloka: lokādhyakṣaḥ · surādhyakṣaḥ · dharmādhyakṣaḥ · kṛtākṛtaḥ · caturvyūhaḥ · caturdaṃṣṭraḥ · caturbhujaḥ
Name #769
The fourfold inner instrument: mind, intellect, ego, heart
From shloka 82 · chapter Kṛṣṇa
चतुर्मूर्तिश्चतुर्बाहुश्चतुर्व्यूहश्चतुर्गतिः ।
चतुरात्मा चतुर्भावश्चतुर्वेदविदेकपात् ॥
caturmūrtiścaturbāhuścaturvyūhaścaturgatiḥ
caturātmā caturbhāvaścaturvedavidekapāt
Also in this shloka: caturmūrtiḥ · caturbāhuḥ · caturvyūhaḥ · caturgatiḥ · caturbhāvaḥ · caturvedavit · ekapāt