Homeostatic regulation is a defining characteristic of sleep but has rarely been examined in infants. This study presents an automated method of sleep deprivation in which 5-day-old rats were shocked whenever the nuchal muscle became atonic. The intensity of shock was always set at the minimal level required to maintain arousal. Deprived pups exhibited rapid increases in sleep pressure, as evid...

Specific connectivity patterns among neurons create the basic architecture underlying parallel processing in our nervous system. Here we focus on the visual system's first synapse to examine the structural and functional consequences of sensory deprivation on the establishment of parallel circuits. Dark rearing reduces synaptic strength between cones and cone bipolar cells, a previously unappre...

Sensory deprivation reorganizes neurocircuits in the human brain. The biological basis of such neuroplastic adaptations remains elusive. In this study, we applied two complementary graph theory-based functional connectivity analyses, one to evaluate whole-brain functional connectivity relationships and the second to specifically delineate distributed network connectivity profiles downstream of ...

Purpose: The present study aimed to investigate the effect of sensory and movement speed manipulations on bimanual coordination dynamics. Here we compared to what extent the absence and or bias of different sensory modalities affect performance of coordination of movements. Methods: Fifteen physical education students of Shahid Beheshti University (aged 18-25 years) were partici...

Abstract Background Visual and hearing impairment is common amongst older adults admitted to the acute hospital setting. Sensory deprivation can contribute falls incidence of delirium, particularly in those who have underlying cognitive impairment. Interventions which reduce sensory been recommended avoid these complication [1]. Methods Patients over 75 11 medical wards a University Teaching Ho...

The deprivation of sensory input after hearing damage results in functional reorganization of the brain including cross-modal plasticity in the sensory cortex and changes in cognitive processing. However, it remains unclear whether partial deprivation from unilateral auditory loss (UHL) would similarly affect the neural circuitry of cognitive processes in addition to the functional organization...

The facial whiskers of mice project through several synapses to anatomically distinct structures called barrels in the contralateral cerebral cortex. With appropriate illumination, individual barrels can be recognized and dissected from unfixed, freeze-dried tissue sections taken parallel to the plane of layer IV. The tissue then can be analyzed using quantitative microhistochemical techniques ...

Visual deprivation is reported to prevent or delay the development of mature receptive field (RF) properties in primary visual cortex (V1) in several species. In contrast, visual deprivation neither prevents nor delays refinement of RF size in the superior colliculus (SC) of Syrian hamsters, although vision is required for RF maintenance in the SC. Here, we report that, contrary to expectation,...

Sensory input is essential for the normal development of sensory centers in the brain, such as the somatosensory, visual, auditory, and olfactory systems. Visual deprivation during a specific developmental stage, called the critical period, results in severe and irreversible functional impairments in the primary visual cortex. Olfactory deprivation in the early postnatal period also causes sign...

Olfactory sensory deprivation during development has been shown to induce significant alterations in the neurophysiology of olfactory receptor neurons (ORNs), the primary sensory inputs to the brain's olfactory bulb. Deprivation has also been shown to alter the neurochemistry of the adult olfactory system, but the physiological consequences of these changes are poorly understood. Here we used i...