【摘 要】
：
Both human speech and animal calls contain a quasi-periodical repetition of acoustic events.To reveal the neural encoding of repetitive sounds, many electrophysiological studies have been conducted on
【机 构】
：
Department of Physiology,China Medical University,Shenyang 110001,China
【出 处】
：
International Conference for Physiological Sciences 2012(201
论文部分内容阅读
Both human speech and animal calls contain a quasi-periodical repetition of acoustic events.To reveal the neural encoding of repetitive sounds, many electrophysiological studies have been conducted on the auditory cortex of anesthetized animals.However, anesthesia could significantly alter the neural response patterns.Hence,in this study, we examined the properties of neural responses in awake rats.We recorded thc single-unit spike activities of primary auditory cortex (A1) neurons and poster auditory field (PAF) neurons, as the rats passively listened to the click trains at various repetition rates.Most of A1 units showed transient responses synchronized with the click trains, while PAF units showed non-synchronized responses, in which the mean firing rate encoded the stimulus repetition rate.Our results revealed a functional difference between A1 and PAF, and suggested that the high-level auditory cortex may rely more on firing rate to encode the temporal features of sounds.
其他文献
Perilipin first was thought only expressed in adipocytes and steroidogenic cells and it was also observed in macrophages and human atherosclerotic plaques in past few years.Perilipin experssion was in
The higher-order thinking skill is essential for medical graduates to do research works.To foster deep thinking and clear expression skills the learner-center teaching method was used in the classroom
Porphyra polysaccharide could exert diverse biological activities such as immunomodulation, antioxidation and antiaging.The purpose of this study was to investigate the neuroprotective effect of porph
Triptolide (T10) is a major active component of the traditional Chinese medicine, Tripterygium wilfordii Hook F (TWHF), and has strong immunosuppressive and anti-inflammatory effects.Here we treats th
Objective To investigate the effects of nitric oxide (NO) on nicotinic acetylcholine receptor (nAChR)expression in prefrontal cortex and hippocampus and the ability of spatial learning and memory.Meth
Clinical studies have shown that about one third of patients with chronic pain suffer from shortterm memory deficit.Our recent work demonstrates that the up-regulation of TNF-α in hippocampus underlie
Objective To investigate the possible effects of different exercise intensity on learning-memory of space in aged rats and explore the underlying mechanisms.Methods Fifty Sprague-Dawley male rats were
BAT (brown adipose tissue) is an important thermoregulatory effector in small mammals, but also contribute to cold defense in both infant and adult humans.It is well established that the BAT thermogen
We investigated the effect of new violet laser stimulation at three acupoints on neurovegetative parameters in anesthetized rats.Data recording was performed in 10 male Sprague-Dawley rats under three
Previous studies showed that an acupuncture analgesia effect on visceral pain(VP) induced by CRD is mediated by neurons in the spinal dorsal horn and thalamus.The nucleus of the solitary tract (NTS) p