What is the Occipito temporal cortex?
What is the Occipito temporal cortex?
The lateral occipito-temporal cortex (LOTC), including the extrastriate body area, is known to be involved in the perception of body parts. Although still controversial, recent studies have demonstrated the role of the LOTC in higher-level body-related cognition in humans.
Where is the Occipito temporal region?
They have proposed the notion of a retinotopically organized occipitotemporal area (Malach et al., 2002), which runs from the posterior fusiform gyrus to the collateral sulcus. Within this region, specific areas respond maximally to different object categories (animals, objects, houses, faces, and words).
What happens if your dorsal stream is damaged?
If either the dorsal or ventral stream is damaged, this leads to dissociable behavioural deficits. For example, patients with optic ataxia have lesions in parietal areas, which are part of the dorsal stream. They have deficits in reaching and grasping objects, but are able to visually discriminate different objects.
What is the most common cause of damage to the dorsal stream?
Dorsal stream dysfunction results from posterior parietal damage and is associated with cerebral palsy, periventricular white matter injury, premature birth, hydrocephalus and Williams syndrome, and similar visual difficulties are becoming apparent in children with autistic spectrum disorder.
Where is the temporal area?
The temporal lobes sit behind the ears and are the second largest lobe. They are most commonly associated with processing auditory information and with the encoding of memory.
What is the temporal lobe?
What is a main function of the dorsal stream for perception?
The dorsal stream (or, “where pathway”) leads to the parietal lobe, which is involved with processing the object’s spatial location relative to the viewer and with speech repetition.
What is the dorsal stream responsible for?
spatial
According to one widely-accepted hypothesis, the dorsal stream (so named because of the path it takes along the dorsal side of the brain) carries information related to movement and spatial relationships between objects in the visual field. It is sometimes called the “where” pathway. See also: ventral stream.
What does the dorsal pathway do?
a pathway that carries visual information from the primary visual cortex to the parietal lobe.
What is the dorsal stream also known as?
Dorsal stream Also known as the parietal stream, the “where” stream, or the “how” stream, this pathway stretches from the primary visual cortex (V1) in the occipital lobe forward into the parietal lobe.
What is included in the temporal lobe?
The temporal lobe contains the primary auditory complex. This is the first area responsible for interpreting information in the form of sounds from the ears. The temporal lobe receives different frequencies, sounds, and pitches from the ears, and gives them meaning.
Is there a virtual dissection of the occipito‐temporal connections?
‘Virtual’ in vivo dissection of occipito‐temporal connections was performed in the group‐averaged data. Further detailed virtual dissection was performed on the single brain data sets.
What is the pathway from the occipital to the temporal cortex?
Furthermore, their autoradiographic experiments indicated that ‘the pathway from the occipital to the temporal cortex in monkeys consists of a series of U fibres that course beneath the cortical mantle to connect adjacent regions in striate, pre‐striate, and inferior temporal cortex’.
Is the occipito‐temporal projection system a chain of U‐shaped association fibres?
However, their presence has been challenged by more recent evidence suggesting that connections between the two regions are entirely indirect, conveyed by the occipito‐temporal projection system—a chain of U‐shaped association fibres. DT‐MRI data were collected from 11 right‐handed healthy subjects (mean age 33.3 ± 4.7 years).
Is the ILF the major occipito‐temporal associative tract?
Whilst some authors consider the ILF to be the major occipito‐temporal associative tract ( Dejerine, 1895; Crosby et al ., 1962; Gloor, 1997 ), others deny its existence ( Putnam, 1926; Polyak, 1957; Tusa and Ungerleider, 1985 ).
