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Consciousness and altered consciousness.
1Semmelweis Egyetem, Neurológiai Klinika, Budapest. szirmai@neur.sote.hu
Ideggyogyaszati Szemle
|February 24, 2006
Summary
Consciousness involves performing tasks, self-awareness, and environmental perception. Brain structures, including the hippocampus, are crucial for memory, learning, and emotion, influencing consciousness levels.
Area of Science:
- Neuroscience
- Cognitive Science
Background:
- Consciousness is defined as global cognitive abilities and self-awareness.
- It encompasses continuous awareness of internal and external environments.
- Cross-linguistic definitions highlight learning, information retrieval, and usage.
Observation:
- Hungarian medical language defines consciousness disturbance as reduced alertness, not impaired mental ability.
- Awareness is the perception and analysis of stimuli; alertness is its prerequisite.
- Brain lesions correlate with specific consciousness dysfunctions, indicating neural origins.
Findings:
- Higher cognitive functions are linked to prefrontal and parietal cortices.
- Ancient brain structures (paleocerebrum, limbic system) are vital for emotions, motivation, and information processing.
- The hippocampus plays a key role in memory, learning, emotion, and motivation.
Implications:
- Neurological practice classifies impaired consciousness based on behavioral responses to stimuli.
- Disturbances in elementary reactions (alertness) and intellectual performance (cognition) overlap.
- Reduced sensory perception can limit the full exploration of cognitive consciousness disturbances.
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