Failure to attend to or be aware of stimuli on the contralesional (usually left) side of space; not due to sensory loss This condition falls within the domain of attention in cognitive psychology and neuropsychology.
Neural and Anatomical Basis
The neuroanatomical basis of hemispatial neglect involves multiple brain structures and pathways, including Right parietal lobe (inferior parietal lobule), right temporoparietal junction, and right frontal cortex. The interplay among these regions determines the specific pattern and severity of cognitive impairment.
Cognitive and Functional Impact
This condition affects multiple cognitive functions:
- Spatial attention
- awareness of contralesional space
The severity and combination of these impairments varies across individuals and can significantly impact daily functioning, social relationships, and independence.
Causes and Risk Factors
Multiple etiological factors have been identified:
- Right hemisphere stroke (most common)
- TBI
- tumor
In many cases, the condition arises from an interaction of genetic predisposition, environmental factors, and specific precipitating events. Understanding these causes is essential for prevention, early detection, and targeted treatment approaches.
Hemispatial Neglect (Unilateral Neglect) is relevant to clinical neuropsychology, cognitive rehabilitation, and our broader understanding of brain-behavior relationships. Assessment typically involves neuropsychological testing, neuroimaging, and detailed clinical history. Treatment approaches may include cognitive rehabilitation, pharmacological intervention, compensatory strategy training, and supportive therapies tailored to the individual's specific pattern of strengths and weaknesses.
Disorder Of
Selective Attention
Hemispatial Neglect (Spatial) can affect selective attention, the ability to focus on relevant information while filtering out distractions. This makes it difficult to concentrate on target information in the presence of competing stimuli.