During embryological development, new capillaries are formed by vasculogenesis, the process of blood vessel formation occurring by a de novo production of endothelial cells and their formation into vascular tubes.

During embryological development, some fetuses may form choroid plexus cysts.

During this precarious period of development the mother should continue to influence the growth of the child's conscience.

During his five years as an assistant director, Kurosawa worked under numerous directors, but by far the most important figure in his development was Kajiro Yamamoto.

During the 1670s corpuscularianism was used by Isaac Newton in his development of the corpuscular theory of light.

During development, engineers had made the decision to use the Zilog 8530 serial controller chip ( SCC ) instead of the lower cost and more common UART to provide serial port connections.

During this period significant analytical contributions to chemistry include the development of systematic elemental analysis by Justus von Liebig and systematized organic analysis based on the specific reactions of functional groups.

During the Middle Bulgarian period, the language underwent dramatic changes, losing the Slavonic case system, but preserving the rich verb system ( while the development was exactly the opposite in other Slavic languages ) and developing a definite article.

During the 19th century, the development of mines led to a new type of naval warfare.

During pregnancy, the breast is responsive to a complex interplay of hormones that cause tissue development and enlargement in order to produce milk.

During thelarche, the developing breasts sometimes are of unequal size, and usually the left breast is slightly larger ; said condition of asymmetry is transitory and statistically normal to female physical and sexual development.

During the 6x86's development, the majority of applications ( office software as well as games ) performed almost entirely integer operations.

During his time there, Doppler, along with Franz Unger, played an influential role in the development of young Gregor Mendel, known as the founding father of genetics, who was a student at the University of Vienna from 1851 to 1853.

During early development of the vertebrate embryo, a longitudinal groove on the neural plate gradually deepens and the ridges on either side of the groove ( the neural folds ) become elevated, and ultimately meet, transforming the groove into a closed tube, the ectodermal wall of which forms the rudiment of the nervous system.

During development in 1983, Amiga had exhausted venture capital and was desperate for more financing.

During the first century of development, the Spanish dominance was undisputed.

During development, the Palo Alto design team were working on a Unix-only workstation that originally included the PRISM.

During the development of radio, many scientists and inventors contributed to radio technology and electronics.

During the late 20th century, Fort Collins expanded rapidly to the south, adding new development, including several regional malls.

During the 1820s and 1830s, HBC trappers were deeply involved in the early exploration and development of Northern California.

During 1991, loan negotiations with multilateral and bilateral lending institutions brought Honduras US $ 39. 5 million in United States development assistance, US $ 70 million in balance-of-payments assistance in the form of cash grants, and US $ 18. 8 million in food aid.

During the initial development phases, Windows XP Professional x64 Edition was named Windows XP 64-Bit Edition for 64-Bit Extended Systems.

During development, it was found that the comparatively heavy rear-mounted engine moved the center of mass of the vehicle rearwards.

During fetal development, since bones and thus the bone marrow develop later, the liver functions as the main haematopoetic organ.

During development, Intel, HP, and industry analysts predicted that IA-64 would dominate in servers, workstations, and high-end desktops, and eventually supplant RISC and complex instruction set computer ( CISC ) architectures for all general-purpose applications.

During this initial period of development, the campus plan was established and six buildings were constructed.

During the development of radio, he also worked on wireless telegraphy.

During that period, Mach continued his work in psycho-physics and in sensory perception.

During an alarming situation in which a threat is detected and signaled to the hypothalamus from primary sensory and limbic structures, cortisol is one way the brain instructs the body to attempt to regain homeostasis – by redistributing energy ( glucose ) to areas of the body that need it most, that is, toward critical organs ( the heart, the brain ) and away from digestive and reproductive organs, during a potentially harmful situation in an attempt to overcome the challenge at hand.

During every moment of an organism's life, sensory information is being taken in by sensory receptors and processed by the nervous system. The information people received which is stored in sensory memory is just long enough to be transferred to short-term memory.

During physical examination, specifically a neurological examination, those with generalized peripheral neuropathies most commonly have distal sensory or motor and sensory loss, though those with a pathology ( problem ) of the nerves may be perfectly normal ; may show proximal weakness, as in some inflammatory neuropathies like Guillain – Barré syndrome ; or may show focal sensory disturbance or weakness, such as in mononeuropathies.

During research on sensory deprivation, Cameron experimented with the use of Curare, a poison used by South American Indians to tip their arrow heads, to immobilise his patients.

During this stage the child lacks true thoughts ; behavior is organized as a function of some sensory or motor effect that it has.

During sensory substitution an intact sensory modality relays information to the visual perception areas of the brain so that the person can perceive to see.

During marketing of other SSRIs and SNRIs ( serotonin and norepinephrine reuptake inhibitors ), there have been spontaneous reports of adverse events occurring upon discontinuation of these drugs, particularly when abrupt, including the following: dysphoric mood, irritability, agitation, aggressiveness, dizziness, sensory disturbances ( e. g., paresthesias such as electric shock sensations ), anxiety, confusion, headache, lethargy, emotional lability, insomnia, hypomania, tinnitus, and seizures.

During REM, the activity of the brain's neurons is quite similar to that during waking hours ; for this reason, the REM-sleep stage may be called paradoxical sleep.

During development, the α < sub > 6 </ sub > β < sub > 2 </ sub > γ < sub > 2 </ sub > receptor increases in expression in cerebellar granule neurons, corresponding to increased sensitivity to furosemide.

During early embryogenesis glial cells direct the migration of neurons and produce molecules that modify the growth of axons and dendrites.

During delta wave sleep, neurons are globally inhibited by gamma-aminobutyric acid ( GABA ).

During the development of the mammalian brain, both substantia nigra ( SN ) and VTA neurons initially project to the dorsolateral and ventromedial striatum.

During the development of the vertebrate nervous system, many neurons become redundant ( because they have died, failed to connect to target cells, etc.

During estrus ( in heat ) in mammals, the hormone estradiol ( a hormone of the class of hormones known as estrogens ) regulates this sexual receptivity behavior by the neurons in the ventromedial nucleus of the hypothalamus, the periaqueductal gray, and other areas of the brain.

During fixation, neurons near the front edge — the foveal zone — are tonically active.

During smooth pursuit, neurons a small distance from the front edge are activated, leading to small eye movements.

During sleep, neurons in the RAS will have a much lower firing rate ; conversely, they will have a higher activity level during the waking state.

During the day this information is sensed and relayed by neurons with large receptive fields while parafoveal neurons with small receptive fields do so in the dark.

During the process of limb development, proximal neurons are the first to form axonal bundles while growing towards the CNS.

During this time, the neurons of the dentate nucleus are similar in shape and form, being mainly bipolar cells.

During development, hormones help determine how neurons synapse and migrate to result in sexual dimorphisms.