Nasal airflow asymmetries and human performance

Klein, Raymond M.; Pilon, David; Prosser, Susan; Shannahoff‐Khalsa, David

doi:10.1016/0301-0511(86)90077-3

Cited by 68 publications

(42 citation statements)

References 10 publications

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“…Allergic disorders are more common in persons with migraine and immunotherapy may be helpful to reduce migraine severity in younger patients [25]. It is possible that simple changes in autonomic tone during migraine could affect performance on the UPSIT.…”

Section: Discussionmentioning

confidence: 99%

Olfactory function in migraine both during and between attacks

et al. 2014

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Introduction People with migraine often report being osmophobic, both during and between acute migraine attacks. It is not clear, however, whether such reports are associated with changes in olfaction such as hyperosmia, as measured by psychophysical testing. In this case-control study we quantitatively assessed olfactory identification ability, which correlates with threshold tests of olfactory acuity, in patients with migraine at baseline (no headache), during migraine episodes, and after a treated attack and compared the test scores to those of matched control subjects. Methods Fifty episodic migraine subjects and 50 and sex- and age-matched controls without headache were tested. All completed the University of Pennsylvania Smell Identification Test (UPSIT), a standardized and well-validated olfactory test. Results At baseline, the UPSIT scores did not differ significantly between the migraine and control study groups (median paired score difference: −1, p = 0.18). During migraine attacks, a minority of migraine subjects (eight of 42) developed microsmia (i.e. lower test scores by at least four points), suggesting that, as compared to their matched controls, olfactory acuity was somewhat impaired during migraine attacks ( p = 0.02). This difference was less pronounced and not statistically significant after a successfully treated attack ( p = 0.15). Discussion People with episodic migraine were found to have similar olfactory function as age- and sex-matched controls, but a minority exhibit microsmia or hyposmia during acute attacks. The cause of this dysfunction is unknown, but could relate to autonomic symptoms, limbic system activation, or disorders of higher order sensory processing.

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Section: Discussionmentioning

confidence: 99%

Olfactory function in migraine both during and between attacks

et al. 2014

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“…However, forced uni-nostril breathing had no effect on performance [48]. But in similar next study, the forced nostril breathing in one nostril produces a relative increase in the EEG amplitude in the contralateral hemisphere.…”

Section: Unilateral Nostril Breathing and Autonomic Functionmentioning

confidence: 97%

Physiology of nostril breathing exercises and its probable relation with nostril and cerebral dominance: A theoretical research on literature

Dhungel

Sohal²

2013

Janaki Med. Coll. J. Med. Sci.

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This article discuss about scientific basis of benefits of practicing slow pranayama, especially alternate nostril breathing pranayama. It explains the basis of benefit of alternate nostril breathing exercises and its probable relation with nasal cycle, cerebral dominance and autonomic nervous system. The airflow through one nostril is greater than next at any point of time which later switches to another. This is called nasal cycle. The nasal cycle lasts from 30 minutes to 2-3 hours. The nasal cycle occurs naturally. This nasal cycle is related with the cerebral dominance. When one nostril is dominant, the contra lateral hemisphere is active. The right nostril breathing leads to increased sympathetic activity while left nostril breathing decreases sympathetic activity and increases parasympathetic tone. So it has been speculated that these three phenomenon viz. nasal cycle, cerebral dominance and autonomic activities are correlated. This review also suggests that practicing alternate nostril breathing (Nadisodhan pranayma) regularly keeps the two hemispheres active and balances the sympathetic and parasympathetic activities in the body. Sympathetic or parasympathetic activity alternates automatically in our body which is important for our survival. Due to our hectic and stressful life, this naturally occurring alternate breathing cycle gets disrupted and we suffer from different ailments. These ailments are due to imbalance of autonomic nervous system which can be resolved by practicing alternate nostril breathing, the Nadisodhan pranayama. It’s just like returning back to nature. DOI: http://dx.doi.org/10.3126/jmcjms.v1i1.7885 Janaki Medical College Journal of Medical Sciences (2013) Vol. 1 (1):38-47

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“…[12][13][14]17 Previous research has also demonstrated increased verbal abilities for women who complete right nostril breathing and enhanced spatial abilities in those who complete left nostril breathing. 18 Others support increased cognitive function in the contralateral hemisphere (e.g., spatial memory) in non-brain-damaged individuals, 12,17,19 as well as changes in hemispheric dominance, 12 cognitive abilities, 16,18 and increased oxygen consumption. 20 If hemispheric dominance is altered through UFNB, 15 this particular pranayama practice may help strengthen the function of the damaged hemisphere following stroke.…”

Section: Introductionmentioning

confidence: 94%

“…[13][14][15] This naturally occurring dominance is related to verbal or spatial abilities, with unobstructed nasal dominance linked to cognitive performance in the contralateral hemisphere. 16 Further research supports EEG activity and hemispheric dominance shift contralaterally with a change in nasal dominance, 15 and changes in hemispheric dominance can be induced when an individual engages in UFNB. [12][13][14]17 Previous research has also demonstrated increased verbal abilities for women who complete right nostril breathing and enhanced spatial abilities in those who complete left nostril breathing.…”

Section: Introductionmentioning

confidence: 99%